What does fault code ECM-P033214 mean?

Diagnostic fault code details for ECM-P033214 (Volvo S60 (2011–), Volvo S60 (2011–), Volvo S60 (2011–)). Repair service at OBD Tuning.

VOLVO

ECM-P033214 - Knock Sensor 2 Circuit Low (Bank 2). General Electrical Failures. Circuit short to ground or open

System

Engine Control Module (ECM)

Volvo models this fault code applies to

Applies to the following models:

7 models

S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–)

Show models by year and engine (20)

What does this fault code mean?

The circuit to the right knock sensor gives a signal that is too low. The cause may be that the cable is short-circuited to ground or broken, so that the circuit is open. The engine control module (ECM) compares the signal with its limits and sets the fault code when it lies outside them.

Possible causes

Signal cable short-circuited to ground
Contact resistance in the knock sensor connections
Break in the signal cable
Short circuit between the knock sensors' signal cables
Damaged knock sensor

What you can do

1Clear the fault code and test drive the car to see whether it returns
2Check that the cable from the right knock sensor is not broken and has no ground contact; with a multimeter, measure against the body
3Check the connectors in the wiring to the right sensor for contact resistance and oxidation
4If you have a diagnostic tool: read the knock signal from the right sensor in live data with the engine running and see whether the value is missing or too low
5Have a workshop with diagnostic equipment check and repair the wiring and replace the knock sensor if needed

Symptoms you may notice1

Poor performance and lack of power while driving

What the fault can affect2

Ignition timing is retarded as a safety measure
Boost pressure is reduced

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