What does fault code ECM-P001B00 mean?

Diagnostic fault code details for ECM-P001B00 (Volvo S80 (2007–), Volvo S80 (2007–), Volvo V70 (2008–)). Repair service at OBD Tuning.

VOLVO

ECM-P001B00 - Intake (A) Cam Profile Control Circuit Low (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:

5 models

S80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)

Show models by year and engine (10)

What does this fault code mean?

The engine control module checks the control signal to the cam profile valves on the intake side, bank 1, and controls the variable cam profiles. The code is set when the control signal is too low, and it is tested with the ignition on. It is a general fault with no more specific description.

Possible causes

Dirty or damaged cam profile solenoid
Signal wire shorted to ground

What you can do

1Read the code, clear it and road test the car to see whether it returns
2Use a multimeter to check that the signal wire to the solenoid is not shorted to ground
3Check the connector at the solenoid for loose or corroded parts
4Have a workshop clean the cam profile solenoid, since metal casting residue in the oil can make it stick
5If you have a diagnostic tool: read the fault status once the diagnosis is complete, where it should show that no fault is found
6If the fault returns: have a workshop replace the cam profile solenoid if it still malfunctions after two cleanings

Symptoms you may notice5

Emissions warning lamp lit
Uneven idle
Engine is hard to start
Higher fuel consumption
Reduced performance

What the fault can affect1

The variable cam profile on both banks switches to the low-lift position

General guidance for car owners. Diagnosis on the car can point to a different cause.