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What does my check engine light trouble code $7e8 mean?

$7EA OBDii code is also displayed

Posted by Anonymous on


2 Answers

larry smith

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  • Expert
  • 32 Answers

That is what they call a "generic" code. Some OBD11 or OBD2, "same thing", scanners will give a $7E8 and $7EA. together and maybe a $7E9.
These are for a sub menu. Click on each one separately and you should or might get a regular "P0" code if your scanner
has the supported module. If not either get a better scanner or
go to a "big box" auto parts store and they will scan it for free and
should be able to give you more information.
Please comment or feedback if helpful.

Posted on Aug 05, 2016


carl blood sr

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  • Chevrolet Master
  • 846 Answers

NO SUCH PROBLEM CODE! It will start with po or p.

Posted on Sep 01, 2014



5 Related Answers


Robert Kuras

  • 13 Answers


P0014 - Exhaust Camshaft Position System Performance
P0973 - Shift Solenoid A Control Circuit Low
P0700 - Transmission Control System Malfunction

Posted on Dec 19, 2013


Ronny Bennett Sr.

  • 6963 Answers

SOURCE: 1999 Chevy Metro 1.0 L OBDII CODE P420. NEW O2

The o2 is just reporting information,it did not mean that it was bad,there is either restriction,in the cat,or there is a contamination in the fuel,an additive might clear it up,maybe.

Posted on Jan 19, 2010

raj somaiya

  • 5370 Answers

SOURCE: We have a 1999 Lumina

P1810- TFP valve position switch circuit .Its a transmission related error code. When the PCM detects an invalid state of the TFP manual valve position switch circuit by deciphering the TFP manual valve position switch inputs, then DTC P1810 comes up. ------- There are few parts that has to be checked. TFP manual valve switch,the PCM,the transmission fluid level,The transmission circuit and its communication.--------- This will help.Thanks.Helpmech.

Posted on Dec 10, 2010


  • 32 Answers

SOURCE: po452 trouble code changed sensor engine light

you might try unhooking the battiey for 20min both + and - posties cuz that will force the computor to have to resest only if you have addressied the fuel pressure problem which taht would most likly be your filter which isn't all that much

Posted on Sep 21, 2009


  • 169 Answers

SOURCE: check engine light comes on with no trouble codes

Is it possible to have any kind of engine or emission related fault codes but not have a Check Engine Light come on? Thanks.

Posted on Jul 26, 2012

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My 2014 GMC Denali 6.2L shows codes 7e8 AND 7eA WHAT DO THEY MEAN

Chevy Mechanic:
Hi my name is ***** ***** I'll be more than happy to assist you. Please allow me a few minutes to review your information. Thank you
They are what they call "generic" codes. Some OBD11 or OBD2, "same thing", generic reades will give a $7E8 and $7EA. together and maybe a $7E9.
These are for a submenu. Click on each one separately and you should or might get a regular "P0" code if your scanner
has the supported module. If not either get a better scanner


Those are typically ECU addresses...... 7EA and 7EB are response addresses HVECU and the Traction Battery

// ECUs
// -- request/response
// -- 7E0/7E8 for ECM (engine control module);
// -- 7E1/7E9 for TCM (transmission control module).
// -- 7E2/7EA for HVECU (Hybrid contol module)
// -- 7E3/7EB for Traction Battery
// -- 7E4/7EC
// -- 7E5/7ED
// -- 7E6/7EE
// -- 7E7/7EF

2010silverado code 7e8 and 7ea engine light on change fuel pump module o2 sensor and air filter no better

these are not codes read your manual on how to use your scanner ---recheck codes and keep going to next step after what you gave as code those just show that codes were present

Check engine light came on my 2006 Audi A4 2.0T Quattro. Put on OBD & got codes $7E8 & $7E9. What do these codes mean?

those are not OBDII codes. Call audi svc Rescan, if u come up with the same info, OR GOOGLE IT!

On a 2007 Cadillac Escalade EXT, What do the OBDII Codes, "7E8: Engine" and "7EA" mean??

Those codes mean the reader you are using is the wrong one. Make sure it is CAN OBD 2

My 2007 gmc sierra denali displays $7EB, $7E8, $7EA. hopefully you help me reslove this issue so i can fix it and stop the engine light from coming on. Best Rgards

How did you come up with these codes ? OBD2 codes all start with a P like P0301 , P0117 , You mite want to have an other scan tool hooked up . Get the correct DTC'S then we could advise you . Trouble Codes

What do the codes 7EA and 7E8 on a 2013 chevy captiva?

These are not trouble codes, instead they direct you to components that need to be looked at. Basically, the control module menus and both codes represent something. The 7e8 represents the engine powertrain, while the 7e9 represents the transmission powertrain.


What do the codes $7EA and $7E8 on a 2007 Chevrolet Equinox?

no such codes, if a three number code it will start with po then the number. if a four digit code it will start with a p. good-day! GM codes,

I have a 2007 CHevy Impala 3.5 lt engine. The engine light came on and we checked the codes and the code came up $7E8 and $7EA. we believe these are generic codes and the $ could be optional

7E8, 7EA. Cat failure.
- Check the health of catalytic converter.
- Check for cracks in muffler.
- Check air leaks.
- Check back pressure of the tail pipe.
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