P0128 OBD Trouble Code

1 result found

P0128 - GM
Type Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description

ECT Below Thermostat Regulating Temperature Conditions
Cause

Engine running, ECT and IAT inputs from 14-97°F, then the PCM detected the engine coolant temperature did not reach at least 167°F with the Water Temperature Counter Diagnostic running.

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