error 538

blksc

Registered User
Hi guys today i was scanning my 94 for codes and returned a 538. This code means that the computer didnt pick up or register a big enough change in the rpm during the KOER test. My question is, what sensor tells the computer what the rpm reading is ?
 
Run the test again

When you run the diagnostic test, there comes a time where the car asks you to hit the accelerator so it can check the throttle position sensor, etc. If you don't do this correctly, you can get code 538. I've done it several times.

Run through the whole test again and make sure you give it a good punch when the time comes.
 
OH yeah i know... after the dynamic response light and after turning the wheel,pressing the brake,hitting the OD button i gave it a brief wide open throttle... but it seems like the computers not picking that up.
 
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