VOLVO
ECM-P001900 - Crankshaft Position - Camshaft Position Correlation - Bank 2 Sensor B. 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–), XC90 (2003–)
Show models by year and engine (2)
What does this fault code mean?
The engine control module compares the camshaft position with the crankshaft position and adjusts the adaptation when they do not agree. It is a general fault with no more specific description, and it concerns bank 2, sensor B, which is the exhaust camshaft. It is set when the adaptation rises or falls beyond a certain value.
Possible causes
- Poor quality engine oil
- Incorrectly set camshafts
- Faulty camshaft control valve
- Damaged VVT unit
- Damaged or worn timing chain
What you can do
- 1Read the code and note whether it is active right now or only stored
- 2If you have a diagnostic tool: activate exhaust camshaft control on bank 2 and check that it responds
- 3Check the engine oil level and quality, especially if it may be contaminated
- 4Have a workshop check the camshaft basic setting
- 5Have a workshop clean the control valve and check the oil passages in the cylinder head
- 6If the fault returns: have a workshop check the VVT unit and the camshaft drive
Symptoms you may notice5
- Uneven idle
- Higher emissions
- Engine stalls while driving
- Engine misfires
- Check engine lamp lit or behaving abnormally
What the fault can affect1
- The control module uses a fixed value for the camshaft adaptation
General guidance for car owners. Diagnosis on the car can point to a different cause.