Diagnostic Trouble Code (DTC) Information ECM-432D

Condition 

Fig 1: Identifying Volvo Leak Detection Pump (Leak Diagnostic Unit)

Courtesy of VOLVO CARS CORPORATION

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the signal from the valve in the pump for the leak diagnostic is too low when the valve is deactivated.

The diagnostic trouble code (DTC) can be diagnosed when the engine has been switched off for 8 hours and is then run for 20 minutes.

Substitute Value 

Leak diagnosis is blocked.

Possible Source 

• Short-circuit to ground in the signal cable.

Fault symptom[s] 

• Malfunction indicator lamp (MIL) lit.