What does fault code ECM-P262100 mean?

Diagnostic fault code details for ECM-P262100 (Volvo C30 (2007–2013), Volvo C70 (2006–2013), Volvo C70 (2006–2013)). Repair service at OBD Tuning.

VOLVO

ECM-P262100 - Throttle Position Output 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:

12 models

C30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)

Show models by year and engine (40)

What does this fault code mean?

The engine control module (ECM) monitors the output of the throttle unit's position sensor. Even though the code is named low, it also applies when the signal is too high. The code is set when the sensor signal is too high or too low, and the cause may lie in connections, wiring or the throttle unit itself.

Possible causes

Contact resistance, oxidation or poor contact at the connections
Signal wire shorted to supply voltage
Open circuit on the signal ground wire
Damaged throttle unit

What you can do

1Switch the ignition on and read whether the code is active now or only stored
2Check the throttle unit connector for contact resistance, oxidation and poor contact
3Use a multimeter to check that the signal wire is not connected to positive supply
4Check the signal ground wire for a break
5If you have a diagnostic tool: follow the throttle position value in live data while you press the accelerator slowly, and see that the value changes smoothly
6If nothing is found, have a workshop check the throttle unit, which may be damaged

Symptoms you may notice1

Check engine light comes on or behaves abnormally

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