pippen

hi guys just want to know what the codes 12 & 16 mean i have misplaced my book.

garth04

12 (r): PCM could not increase idle speed above normal idle during KOER high RPM idle check. Suspect throttle body coking.

13 (r): PCM could not lower idle speed below normal idle during KOER low rpm idle check. Suspect Idle Bypass valve problems.

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pippen

thanks for that

pippen

so is that saying my base idle is too high?? Im confused

garth04

12 (r): PCM could not increase idle speed above normal idle during KOER high RPM idle check. Suspect throttle body coking.

Its suggests your throttle body is blocked / restricted by coking or buildup

16 (r): ISC can't keep engine from stalling. Check for short to ground in ISC circuit.

sorry I put 13 up instead of 16

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