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1997 Honda Accord:
Check Engine Light, Clear Trouble Codes

By
Alex Steele
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Question:

 

The check engine light on my 1997 Honda Accord has come on twice while on long trips. The first time the dealer said it was a "false code" and reset it. Now it's on again. Can I reset this myself? It has 28K miles.

 

Answer:

 

You can clear the diagnostic trouble codes from the PCM (Powertrain Control Module) memory all by yourself, but it's not going to fix anything. I'm not quite sure what they meant by "false code", but if the check engine light did come on while the engine was running; there is a problem -- period. If it showed a code that doesn't exist that would be a strong indication of a fault within the PCM itself.

 

To clear the codes simply go to the fuse panel under the hood and remove the Back Up (Radio) 7.5amp fuse for ten seconds with the ignition off. Then the next time the check engine light comes on bring it back to the service department and tell them your problem is for real.

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Comments:

TechHelp2
31 Dec 2015, 19:17
RE: Kevin, The P0135 and P0141 indicate a short or open in the primary heater circuit of the heated oxygen sensors. Check for voltage at wires 3 of the O2 sensor plug. Check the ECU\ECM\PCM\ 7.5 amp fuse.

Check for resistance between wires 3 and 4 of the same plug at both O2 sensors.
Check for proper ground at the O2 sensor plug. Check the ground wires at the right shock tower for corrosion or having loose connection.

If all checks out it could be a bad PCM.
kevin
31 Dec 2015, 14:25
97 Honda Accord dx 2.2l check engine light. Computer code PO135 (41) H02S S1 Heater failure and PO141 (65) H02s S2 Heater failure
Admin
17 Apr 2013, 09:14
That's weird if you had spark before replacement of the distributor and belt.

If ignition or cam timing was off, it may not start, but you would still have a spark.

Remove the distributor cap and be sure the rotor is turning while cranking, If so, reinstall the old distributor to see if the spark comes back.

Also, if it's an internal coil, be sure the spring from the coil to the cap is in place and not damaged.
Ray
16 Apr 2013, 21:07
Replaced Distributor and timing belt. Set all the timing marks with #1 piston full up. Now vehicle has no spark, need help. Thanks. Ray
Oh, sorry, 1997 Honda Accord SE 2.2 ltr.

 

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