VOLVO
ECM-P154900 - Intake Manifold Communication Control Circuit (Bank 1). 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) monitors the variable intake system on bank 1 and sets the code when it detects a fault there. The fault concerns control of the intake system, and the cause may be a damaged vacuum valve, an open or shorted signal wire, or a damaged engine control module.
Possible causes
- Open circuit in the signal wire, or the signal wire is shorted to ground
- The signal wire is shorted to voltage
- Damaged vacuum valve
- Damaged engine control module (ECM)
What you can do
- 1Check that the fuses are intact. Their location is in the owner's manual or on the fuse box cover.
- 2Check the connectors at the vacuum valve and at the engine control module for looseness, contact resistance and corrosion.
- 3With the ignition off, use a multimeter to check that the signal wires have no break and no contact with ground (the body) or voltage.
- 4Check that the vacuum hoses to the valve are sealed and not cracked.
- 5If you have a diagnostic tool, activate the vacuum valve and check that it responds.
- 6If the fault remains, have a workshop check the vacuum valve and the engine control module.
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.