P0338 OBD Trouble Code

1 result found

P0338 - GM
Type Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description

CKP Sensor Circuit High Frequency Conditions

Cause

Engine speed below 4000 rpm, MAF input over 5 g/sec, then the PCM detected that the CKP REF duty cycle was over 50%, or that the ratio of High REF to Low REF pulses was over 5.66

Try also: https://www.obd-codes.com/p0338