VOLVO
ECM-P023100 - Fuel Pump Secondary Circuit Low. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS80 (2007–), V70 (2008–)
Show models by year and engine (2)
What does this fault code mean?
The engine control module (ECM) compares the fuel pump status received over CAN with the signal it sends to the pump. The fault is set when the pump is not running even though the control module requests it to run. The fault is first registered in the central electronic module (CEM), so that module should be checked first.
Possible causes
- Open circuit in the signal wire
- Signal wire shorted to ground
- Damaged fuel pump
What you can do
- 1Read the codes in the central electronic module (CEM) first and deal with them
- 2The code in the engine control module can only be cleared once the CEM fault has been fixed and cleared
- 3Check that the fuses for the fuel pump are intact. Fuse locations are shown in the owner's manual
- 4Look at the fuel pump connector for loose connections and corrosion
- 5Use a multimeter to check that the signal wire to the pump is not broken and not shorted to ground
- 6If the fault remains, have a workshop check the fuel pump with diagnostic equipment
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.