Is 7e8 engine code bad

7e8 engine code chevy 7e8 engine code ford 7e9 a/t code 7e8 and 7e9 engine code subaru ...

Is 7e8 engine code bad. 7E8 and 7E9 these are not codes what they are are system 7E8 is for the engine powertrain and 7E9 is for the transmission powertrain, go to the menu 7E8 if it list a DTC (diagnostic trouble code) select it, and it would read a P code such as P0XXX or P1XXX same

Apr 13, 2024 · The 7E8 engine code indicates an issue related to air or fuel intake in your car’s emission system. The code may appear as 7EB, 7EC, 7ED, 7EE, or 7EF, indicating different issues with the engine. Common issues associated with the 7E8 code include faulty oxygen sensors, vacuum leaks, damaged fuel injectors, and ECM problems.

Different scan tool display engine powertrain , transmission powertrain and ABS system. These 3 control modules for the scan tool to read. the fault codes will be in the engine control module, but the 7E8 is letting you know there are codes, you need to select the engine control module to read the codes. same for 7E9It could be a temporary misread of the engine sensor and not always indicate a severe problem. Diagnosing the 7E8 Code. If the 7E8 Code appears on your car’s diagnostic system, the first step is to clear the Check Engine light or use a scanner to reset the CE. This may resolve the issue, and the Code will not reappear. Repairing the …If so select one of the items and it should show you more information. $7E8 should be the ECM menu item and $7E9 should be the transmission menu. Also I would use a regular scanner to get the translation codes such as P0144. Here is a guide.Web unfortunately for you, the $7e8 and $7e9 engine codes mean bad news! 7e8 is not specific to the. Any vehicle can emit these if its having trouble with the emissions system. Web The 7E8 Code Will Be Stored Whenever The Engine Has A Problem, And The Cel Will Illuminate. Web is it safe to drive my car with the 7e8 engine code showing?An engine code is also referred to as a Diagnostic Trouble Code, or DTC. Wrangler DTC codes can range from low battery voltage to sensor issues, depicted by a string of digits. How to Check An Engine Code. For JK Wranglers, checking the engine code is a relatively simple task. Just complete the following steps: Insert key into the ignition.

The 7EA engine code is a diagnostic trouble code (DTC) that is commonly found in vehicles. When this code appears, it indicates that there is a problem with the engine’s control module. The control module is responsible for monitoring and regulating various aspects of the engine’s performance, such as fuel injection, ignition timing, and ...Jul 30, 2020 · Unfortunately for You, the $7E8 and $7E9 engine codes mean bad news! No, just kidding -- they can mean literally anything. When the OBD-II tool that You're using can't read and translate the fault code data into hexadecimal format, it uses sort of "placeholder" codes. Your $7E8 code does indeed indicate that there's a fault with the Hyundai Sonata's engine, but without more information, there ... The P0420 code indicates that the Engine Control Module (ECM) has identified a decline in the efficiency of the catalytic converter on Bank 1. This could be attributed to a malfunctioning catalyst or potentially be a false alarm triggered by a defective O2 sensor. The engine control module (ECM) uses two O2 sensors, one in front, and …The 07e8 code in Ford vehicles refers to a Diagnostic Trouble Code (DTC) that indicates a potential issue with the vehicle’s engine, transmission, or emissions system. This code is specific to Ford vehicles and is part of the OBD-II (On-Board Diagnostics II) system. It helps technicians diagnose and troubleshoot problems in the vehicle.1. Use an OBD-II scanner to retrieve the specific trouble codes associated with the 7E8 engine code. This will provide more detailed information about the issue. 2. Consult the vehicle’s service manual or Popular Mechanics Magazine for a list of possible causes and solutions related to the 7E8 engine code. 3.Conclusion. The 7E8 engine code in Hyundai can be triggered by various factors. It ranges from a simple glitch in the system that can be gone the next time you restart and drive your car. However, in more serious scenarios, it could mean repairs or parts replacement. Regardless of the reason for the code, it's important that you should address ...

Need Help? Ask a mechanic online, 24 hours a day here: https://tinyurl.com/24-7-mechanicIn this video we'll talk about the 7E8 and 7E9 engine error codes, wh...1 post · Joined 2018. #1 · Jan 5, 2018. I have a2010 328i .the check engine light came on then the engine stopped. now there is an exclamation mark and the car will not even try to start .it has plenty of battery. engine code shows $7e8. need help. Thanks John.The 7e8 engine code is one of the most common codes, meaning that it can be caused by many things. Some possibilities are: A bad throttle position sensor (TPS). …The 7E8 is more of a menu for the engine data stream than a code. It represents the data stream of the car’s engine and also indicates air pressure loss in the evaporative emission control system. Often, when this engine code comes up, it implies an engine powertrain. Engine codes help you to identify any potential engine problems so you can ...

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For More Info visit us at: http://1aau.to/h/cu9/Here are the top check engine trouble codes that you might encounter with your 1999 to 2007 Ford Super Duty F...7e8 engine code - Peugeot Cars & Trucks question. 7E8 and 7E9 these are not codes what they are are system 7E8 is for the engine powertrain and 7E9 is for the transmission powertrain, go to the menu 7E8 if it list a DTC (diagnostic trouble code) select it, and it would read a P code such as P0XXX or P1XXX same7E8 and 7E9 these are not codes what they are are system 7E8 is for the engine powertrain and 7E9 is for the transmission powertrain, go to the menu 7E8 if it list a DTC (diagnostic trouble code) select it, and it would read a P code such as P0XXX or P1XXX sameCommon Trouble Codes Related to $7E8. As mentioned above, $7E8 is a designation used to describe a vehicle’s engine control module. Therefore, this menu will be selected when attempting to access engine related faults. The following are several faults most commonly stored by this module. P0300 – P0305: Cylinder misfire; P0171 – …It is a hexadecimal code that is used to indicate a specific issue or fault within the engine system. When the ECM detects a problem, it triggers the illumination of the check engine light on the dashboard, accompanied by the 7e8 engine code. It is important to address this code promptly to avoid further damage to the engine.

The code 7E8 on a Dodge Charger is a generic diagnostic trouble code (DTC) that indicates a communication fault with the vehicle’s engine control module (ECM). This code is typically accompanied by another code that provides more specific information about the issue.Alex S. December 12, 2020. If You notice that there is a check engine light on the dash of Your BMW You will want to use an OBD II scan tool. If You scan it and notice that the code iS7EC then it means that there is a problem with the engine control module. Usually this code will be thrown when there is a problem with the computer.Top Answer. Xavier T. February 5, 2021. The code 7E8 means that Your Chevy Suburban is facing fuel or air intake issues. In case You see this code in Your car, You should take it to a reliable auto repair shop to get the problem properly diagnosed. The diagnosis will determine the root cause of the issues in the fuel or air intake.If so select one of the items and it should show you more information. $7E8 should be the ECM menu item and $7E9 should be the transmission menu. Also I would use a regular scanner to get the translation codes such as P0144. Ask Your Own Kia Question.The 7E8, also $7E8 is a sub-menu in the OBD scan tool where you will get fault codes for the engine control module; those are the P0000 codes. 7E9 ($7E9) - Transmission Control Module (TCM) 7E9 and $7E9 sub-menus in your scan tool will open fault codes for the transmission control module, which are also P0000, so you will be able to ...Dec 4, 2023 · It’s critical to resolve the 7E8 engine code as soon as it appears on your car’s dashboard. There are fixes to get your automobile back on track if this code indicates an issue with the engine or transmission. The most common fix for P0420 in the Chevy Cruze is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Cruze into an exhaust shop for an (expensive) new catalytic converter, let's ensure that's what you need. Here's a good P0420 diagnostic order for the Chevy Cruze: 1. Check for Other Codes.If the P1326 code is caused by a bad KIA or Hyundai ECM software, you can have it upgraded for free at the dealer. If it's caused by a faulty knock sensor, expect it to cost $150 to $450. However, a seized engine can cost over $10,000. If you've done the diagnostics and you know what's wrong, you are ready to proceed with the fix.

You will often find this code together with another code of the specific cylinder the misfire occurred on. If the last digit of the trouble code is not zero, e.g., if the generated code is P0302, the number 2 indicates that cylinder number 2 has a misfire. The misfire of an engine cylinder causes the engine speed to fluctuate.

Y65 - Engine Stop/Start Just note that it does not involve any battery replacements. If you only replaced the small aux battery, if the main battery has since gone bad, it would be drawing the power out of the aux battery. Left too long, and you will have 2 bad batteries that need replacing.According to Popular Mechanics Magazine, the 7e8 and 7e9 engine codes in Hyundai vehicles have been associated with various problems and known issues. These codes often indicate issues related to the engine's fuel system, such as fuel pressure or injector problems. It is recommended to have the vehicle diagnosed by a qualified mechanic to ...When the P0133 code is set, it means that the O2 sensor isn't altering the voltage output as it should when the air-fuel ratio changes. For that reason, it's categorized as having a slower response than normal. This code indicates trouble with oxygen sensor #1 on bank #1, which is on the same side of the engine as cylinder #1.CODE 89 IS FUEL PRESSURE REGULATOR 1 PERFORMANCE.CODE 642 SENSOR REFERANCE VOLTAGE CIRCUIT "A" LOW.AND CODE 2004 IS ITAKE MANIFOLD RUNNER CONTROL STUCK OPEN.CK FOR BAD OR MISSING VACUUM LINES.IS IT STILL UNDER WARRANTY. SOURCE: 1999 VW Passat low idle. replace …The $7 at the start represents mode 7. The E8 and E9 represent different modules or parts of the vehicle from where the codes are retrieved. E8 represents the engine control module while E9 represents the transmission control module. In short: 7E8 means a request code from ECM. 7E9 means a request from TCM.Ok. clear the codes and get the first code that shows back up when the light comes on. Tim's Auto Repair. Category: Chevy. Satisfied Customers: 20,077. Experience: Have owned a repair shop for 25 yrs. Verified. Tim's Auto Repair and 87 other Chevy Specialists are ready to help you. Ask your own question now.Please include year make model in all Vehicle related question. Thanks Your $7E8 and the $7E9 are fuel/ air intake codes, as for the P1326 Ok, this code is set when the knock sensor detects vibrations from engine rod knock, however, it may be set falsely due to incorrect knock sensor logic programming in the engine control module. Codes $7E8, $7E9 and P1326?Common causes for the 7e8 and 7e9 engine codes. The 7e8 and 7e9 codes can be triggered by various issues within the engine system. Some common causes include: 1. Faulty Oxygen Sensor: A malfunctioning oxygen sensor can cause an imbalance in the air-fuel mixture, leading to the engine codes. 2.Posted on Feb 14, 2015. SOURCE: what do 7e8 and 7ea codes refer to? This seems to be a scanner component ID, not the OBD2 fault code. You need to learn to use the scanner and interpret the readings (usually the scanner manual contains the meanings to these codes) If this is not possible, you need to take the car to an independent service with ...I have the following codes $ 7EA ,$7E8: engine. And $7E9:A/T, The codes are $7EA.$7E8: engine and $7E9:A/T, 2004 Ford - Answered by a verified Ford Mechanic. ... Not too many major things go bad with the hybrids but anything is possible. Ask Your Own Ford Question. Ford Mechanic: ...

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darkside1911. • 4 mo. ago. Usually a $07E8 along with the $07E9 CODE is a gas cap issue not placed back correctly or bad as well, just saying. Due to no high pressure in fuel tank the ECU will detect it and an engine warning light will come on. That can result in bad performance and stalling.Damaged Canister. Bad Canister Close Valve. Bad fuel tank pressure valve. Unplugged fuel vapor line. Faulty pressure control solenoid valve. Bad fuel pump seal. A Bad fuel filler pipe. Bad fuel filler cap. Recommended: Why is My Check Engine Light Blinking? That’s it for the causes of the 7e8 engine code Chevy. How to Fix the 7e8 Engine Code.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...The 7E8 and 7E9 engine codes are generic codes that can be used by any vehicle manufacturer. The 7E8 code refers to the ECM, while the 7E9 code refers to the Transmission Control Module (TCM). These codes can be read using an OBD-II scanner, which can be plugged into your car’s diagnostic port.The 7E8 is more of a menu for the engine data stream than a code. It represents the data stream of the car’s engine and also indicates air pressure loss in the evaporative emission control system. Often, when this engine code comes up, it implies an engine powertrain. Engine codes help you to identify any potential engine problems so you can ...The code is a menu of systems that the OBDII scanner can access. OBDII scanner interprets the code and displays the menu. Some scanners can't solve these codes and show the codes instead of the interpretation. Clicking on the code menu will read the OBDII codes (e.g. P0420 or P0455), if any, from that system. Menu Code 7E8 ($07E8): …When your vehicle’s onboard computer illuminates the check engine light and triggers the 7E8 code, it’s essential to address the issue promptly. Ignoring it can …According to Popular Mechanics Magazine, the 7e8 and 7e9 engine codes in Hyundai vehicles have been associated with various problems and known issues. These codes often indicate issues related to the engine’s fuel system, such as fuel pressure or injector problems. It is recommended to have the vehicle diagnosed by a qualified mechanic to ... ….

2012 Subaru Outback Engine Code 7E8 and 7E9. JVOYER64 MEMBER; 2012 SUBARU OUTBACK; 1.2L; 4 CYL; AWD; AUTOMATIC; 78,000 MILES; Would like to know how to fix. Do you. have the same problem? ... HE SAYS THE CODES ARE NOT CODES AT ALL, BUT MEANS THE SCANNER IS UNABLE TO TALK TO THIS VEHICLE HE SAYS USE A DIFFERENT SCANNER (BRAND) TO TRY TO SCAN FOR ...The 7E8 is more of a menu for the engine data stream than a code. It represents the data stream of the car’s engine and also indicates air pressure loss in the evaporative emission control system. Often, when this engine code comes up, it implies an engine powertrain. Engine codes help you to identify any potential engine problems so you can ...P1289 Manifold Tune Valve Solenoid Circuit Open Or Shorted - Read Our Article on Automotive Circuit Testing For Help With This Jeep Check Engine Light Code. P1290 CNG Fuel Pressure Too High. P1291 No Temp Rise Seen From Fuel Heaters. P1292 CNG Pressure Sensor Voltage Too High. P1293 CNG Pressure Sensor Voltage Too Low.MAZDA CX 7, 2008, SCAN, CODE $7E9 CODE $7E8, THAT APPEARS ON SCREEN. CHECK ENGINE CLEAR - Answered by a verified Toyota Mechanic. ... Hello, I have a 2015 Camry and I used an OBD scanner and the follwing errors are showing. $7E8: engine and $7E9: A/T codes are showing.OBDII scanner interprets the codes and displays the menu. Some scanners can't solve these codes and show the codes instead of the interpretation. Clicking on the code menu will read the OBDII codes (e.g. P0420 or P0455), if any, from that system. Menu Code 7E8 ($7E8): Engine System Menu Code 7E9 ($7E9): Transmission SystemThe P083B code is a generic powertrain/engine code that various makes and models can log. However, this does not mean that there is a one-size-fits-all solution to identify its underlying problem. ... Signs of Bad U-Joints; Dirty Engine Air Filter; Exhaust System Diagram; OBD-II Trouble Codes toggle close obd. OBD2 Codes 101; P0420 Code; P0430 ...I have two codes on my 2013 Kia optima. $7E8 and $7E9. Curious what they are. It will clear out but come back on like - Answered by a verified Kia Mechanic ... engine light on, diagnosed a 7e8 engine code and 7e9 a/t code ... Codes indicated bad speed sensor so both were replaced with no effect.The 7E8 engine code is a diagnostic trouble code (DTC) used in modern vehicles, particularly those equipped with onboard diagnostics (OBD) systems. It serves as a vital communication tool between your car's engine control module (ECM) and the diagnostics interface.Please include year make model in all Vehicle related question. Thanks Your $7E8 and the $7E9 are fuel/ air intake codes, as for the P1326 Ok, this code is set when the knock sensor detects vibrations from engine rod knock, however, it may be set falsely due to incorrect knock sensor logic programming in the engine control module. Codes $7E8, $7E9 and P1326? Is 7e8 engine code bad, Ready to win back a customer after a bad customer experience? It may already be too late, but these findings from a new survey are a lifeline to help. Ready to win back a customer ..., Ready to win back a customer after a bad customer experience? It may already be too late, but these findings from a new survey are a lifeline to help. Ready to win back a customer ..., GETTING CODES $7EB, $7EA AND $7E8 ON SCANNER. THAT IS CODE AND YES TRIED TO RESET. 2010 BUICK ENCLAVE. JUST SCANNING TO - Answered by a verified Buick Mechanic ... Autel auto link is not a bad tool but sometimes depending on the vehicle will trip these codes . On your GM you will need to try another more …, Check engine light came on could a bad power steering pump cause it 2004 f250 gas engine. ... PRIUS engine code 7E8. I have toyota prius i got code $7e8 engine code whats that means please Read full answer. Mar 31, 2014 • 2004 Toyota Prius. 0 helpful. 1 answer. 2004 ford f250 quit while driving on highway, changed filters, still won't start., No work done and no red triangle. Toyota Mechanic: Ase Master. that's a generic code but You need a scanner with Techstream software, like the MiniVCI, to get the real Toyota codes. Your scanner is not compatible with the hybrid ECU. 7E8 is for the engine powertrain . Lets try this ., P0107 MANIFOLD ABSOLUTE PRESSURE/BAROMETRIC PRESSURE CIRCUIT LOW $7E8. P1404 UNKOWN DIAGNOSTIC TROUBLE CODE $7E8. P0340 CAMSHAFT POSITION SENSOR "A"CIRCUIT BANK 1 OR SINGLE SENSOR $7E8. P0607 CONTROL MODULE PERFORMANCE $7E8. PENDING TROUBLE CODES. …, Common Trouble Codes Related to $7E8. As mentioned above, $7E8 is a designation used to describe a vehicle’s engine control module. Therefore, this menu will be selected when attempting to access engine related faults. The following are several faults most commonly stored by this module. P0300 – P0305: Cylinder misfire; P0171 – …, The 7E8 engine code is a generic code some scanners display, which usually requires further investigation to pinpoint the exact issue. This guide will walk you through understanding and troubleshooting the 7E8 engine code to get your vehicle back on the road. Shop Car Code Reader Now. Understanding the 7E8 Engine Code, These two terms are really not codes, at least not diagnostic trouble codes. The 7E8 is an engine data menu. The 7E9 is the same for the transmission. ... Okay. It's a plug piece and not too bad. The second one came up as a pressure solenoid stuck on. That one I saw on my 2002 Saturn LW200 when I was needing to replace the filters on the ..., The P0420 code indicates that the Engine Control Module (ECM) has identified a decline in the efficiency of the catalytic converter on Bank 1. This could be attributed to a malfunctioning catalyst or potentially be a false alarm triggered by a defective O2 sensor. The engine control module (ECM) uses two O2 sensors, one in front, and one behind ..., Mar 20, 2024 · Also, endeavor to perform an EVAP test on your car after driving for 10,000 miles to prevent poor gas mileage and the $7e8 engine code. You can take your car to a professional mechanic if the engine code persists after initiating any of the above fixes. How to Fix the 7e9 Engine Code. The 7e9 code can be curbed by regular maintenance of your ... , If a trouble code is displayed during the DTC check in the check mode, check the circuit for the code listed in the table below. For details of each code, refer to the "See page" column in the DTC chart. Camshaft Position "A" Actuator Circuit; Camshaft Position "A" - Timing Over; Camshaft Position "B" Actuator Circuit, This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread., How to clear the engine codes without a Nissan CONSULT or scan tool. 1. Set ECM in Diagnostic Test Mode II (Self-diagnostic results). 2. Fully depress the accelerator pedal and keep it for more than 10 seconds. The emission-related diagnostic information has been erased from the backup memory in the ECM. 3., answered 5 years ago. Your $7E8 and the $7E9 are fuel/ air intake codes, as for the P1326 Ok, this code is set when the knock sensor detects vibrations from engine rod knock, however, it may be set falsely due to incorrect knock sensor logic programming in the engine control module. So, the first step is to determine if there is an actual ..., =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code TOYOTA P0354 Saving Repa..., Again, $7e8 & $7e9 are not engine codes. Web that's because 7e8 isn't an engine trouble code. Web the 7e8 engine code may seem like an enigmatic set of characters to the uninitiated, but it becomes easier to grasp with some background knowledge. Let's Discuss What The 7E8. Web is it safe to drive my car with the 7e8 engine code showing?, Jan 22, 2023 · Diagnosing the 7E8 Code. If the 7E8 Code appears on your car’s diagnostic system, the first step is to clear the Check Engine light or use a scanner to reset the CE. This may resolve the issue, and the Code will not reappear. Repairing the 7E8 Code. Suppose this Code appears after clearing the Check Engine light or resetting the CE. , Hi, These two terms are really not codes, at least not diagnostic trouble codes. The 7E8 is an engine data menu. The 7E9 is the same for the transmission. Is the check engine light staying on when the engine is running? Are you experiencing any engine or transmission issues?, This is my first post here. I have a 2006 Durango with 60K miles. I want to correct my check engine light problem. Yes, I have changed the gas cap. The codes tat keep coming up are 7E8 and 7E9. It just seems that all the place I have brought it to want to clear the code and send me on my way. The vehicle runs fine., If the P1326 code is caused by a bad KIA or Hyundai ECM software, you can have it upgraded for free at the dealer. If it's caused by a faulty knock sensor, expect it to cost $150 to $450. However, a seized engine can cost over $10,000. If you've done the diagnostics and you know what's wrong, you are ready to proceed with the fix., They are generic codes that are used by some scan tools or code readers to indicate that there are additional codes stored in the vehicle's Engine Control Module (ECM). The $7E8 code typically refers to the engine, while the $7E9 code refers to the transmission. These are CAN codes so you have a PCM or BCM that is not working but I have seen ..., 7e8 Engine Code Dodge Ram 1500 22 Jun 2023. 7e8 engine code bmw I'm french and speak english very bad but 1500's owner (year 2004) n Dodge ram 8.3 1500 srt-10 standard cab sloopvoertuig (2004, rood), The 7e8 code indicates the engine powertrain at the Ford. Usually, your Ford vehicle faces fuel or air intake issues. In most cases, the main problem is a vacuum leak (a certain amount of air has bypassed the usual Ford engine intake tract) or a failing O2 sensor., MEMBER. 2006 SATURN ION. 85,000 MILES. ROUGH IDLE, NO POWER, codes set. Control module engine codes -7E8 & 7EA, and random multiple cylinder misfire.P0300 - 07E8. What would be the cause?, 1 Answer. SOURCE: 2001 jeep grand cherokee the compass/temp. Before replacing the module ($$$$) check the temperature sensor at the front of the vehicle behind the bumper or grill. A reading of -40 indicates a high resistance (NTC resistor sensor). This is probably due to water ingress on a connector causing the high resistance., Common causes for the 7e8 and 7e9 engine codes. The 7e8 and 7e9 codes can be triggered by various issues within the engine system. Some common causes include: 1. Faulty Oxygen Sensor: A malfunctioning oxygen sensor can cause an imbalance in the air-fuel mixture, leading to the engine codes. 2., Dodge ram engine problems 1500 ram dodge speak bad french english very but 4x4 Erapaints paints straightforward containing. SOLVED: What is the 7e8 and 7e9 code on a 2014 ram - Fixya. Engine ram ecodiesel diesel module eco dodge v6 stealth 1500 challenges creating code dodgeforum chart specifications 7e9 7e8 fixya Solved: what is …, May 18, 2023 · Code 7E8 denotes a fuel or air intake problem resulting in a loss of airflow for the vehicle’s evaporative emissions management system. The transmission control system problem code 7E9 might result in a reduction in transmission efficiency. Emission codes 7E8 and 7E9 are connected to a broken throttle position sensor. , 7E8: Engine and 7E9:A/T code. Hey folks, new to Mazda's since my old B210. Just picked up a 2010 3 Hatchback with 2.5 engine. My son was driving it and it showed the AT lights and light with car and I assume was traction control symbol. I read the codes and got 7E8: Engine and 7E9:A/T code. Not much info in the web about this., P0606 definition: The processor in the Engine Control Module (ECM) or Power Control Module (PCM) has a fault. Issue Severity: SEVERE - Stop driving immediately. Repair Urgency: Fix this code immediately (same day if possible) to avoid being stranded because the engine won't start or run. Diagnosis: This trouble code can cause the vehicle ..., By Mark Benjamin AT / January 17, 2023. The 7e8 Engine code for Chevy models is set if there is a fuel or air intake systems malfunction. If you are facing low fuel mileage or reduced engine performance, it may be the cause. You need a proper car diagnosis to determine the root cause of the 7e8 Engine code and fix it as soon as possible., Codes marked with the hexadecimal $ are part of the Mode 6 diagnostics of OBD II. Initially it wasn't designed for technician use, however it is used all the time now to determine if a component or sensor is beginning to fail or to confirm a repair rather than just waiting to see if the CEL comes back on.