Diagnostic trouble code (DTC) information ECM-432B

Condition 

Fig 1: Identifying Leak Diagnostic Pump

Courtesy of VOLVO CARS OF NORTH AMERICA.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that there is no signal from the valve in the pump for the leak diagnostic when the valve is activated.

The diagnostic trouble code (DTC) can be diagnosed when the leak diagnostic system is run.

Substitute Value 

• The leak diagnostic is disabled.

Possible Source 

• Contact resistance in the terminals
• Open-circuit in the signal cable
• Open-circuit in the power cable
• Damaged valve.

Fault symptom[s] 

• Malfunction indicator lamp (MIL) lit.