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Revision as of 11:33, 28 June 2012 by Jef (Created page with "__FORCETOC__ == 16505/P0121 - Throttle Position Sensor (G69): Implausible Signal == ==== Possible Symptoms ==== * MIL on * Poor engine performance ==== Possible Causes ===...")
16505/P0121 - Throttle Position Sensor (G69): Implausible Signal
- MIL on
- Poor engine performance
- Wiring Harness issue
- Failed Throttle Body
- Failed ECM
- Test wiring as per Factory Repair Manual
- For some vehicles, there may be a TPI with instructions on replacing the terminals for the throttle body.
- Some ECMs may have a firmware update to address this issue during cold weather.