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Diagnostic Codes

DIAGNOSTIC CODES

Code Description
Code 12 System check. No problem indicated.
Code 13 Oxygen (O2) sensor circuit is open causing lean fuel condition.
Code 14 Coolant temperature sensor (CTS) circuit is open.
Code 15 Coolant temperature sensor (CTS) circuit is shorted.
Code 21 Throttle position sensor (TPS) circuit is open.
Code 22 Throttle position sensor (TPS) circuit is shorted.
Code 23 Intake air temperature sensor circuit is open.
Code 25 Intake air temperature sensor circuit is shorted.
Code 31 Turbocharger boost pressure too high.
Code 33 Airflow meter circuit open or shorted.
Code 41 Ignition signal to ECM interrupted.
Light "ON" Not Flashing ECM failure.
Fig 1: Diagnosis Flow Chart
G94572
Fig 2: Diagnosis Flow Chart (1 Of 2)
GB0046304
Fig 3: Diagnosis Flow Chart (1 Of 2)
GB0046305