Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




Diagnostic trouble code (DTC) ECM-73 is stored if the control module detects that the signal from the throttle position (TP) sensor is too high or too low.

Substitute value
- Limited DSA function
- Initial boost pressure
- No fuel trim adaptation
- Limited EVAP control
- The mass air flow (MAF) sensor signal is used to determine the throttle angle.

Possible source

Signal too high:
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the ground lead
- Contact resistance in the terminals
- Defective throttle position (TP) sensor.

Signal too low:
- Short-circuit to ground in the signal cable
- Open-circuit in the signal cable
- Open-circuit in the power cable
- Contact resistance in the terminals
- Defective throttle position (TP) sensor.

Fault symptom[s]
- Transmission slap when applying / lifting off the throttle
- Poor performance
- Deteriorated DSA function
- The DSA warning lamp lights
- Idle speed too high
- Idle speed too low.