What does fault code ECM-P212588 mean?

Diagnostic fault code details for ECM-P212588 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo S80 (2007–)). Repair service at OBD Tuning.

VOLVO

ECM-P212588 - Throttle/Pedal Position Sensor/Switch E Circuit. Bus Signal / Message Failures. Bus off

System

Engine Control Module (ECM)

Volvo models this fault code applies to

Applies to the following models:

3 models

S60 (2011–), S80 (2007–), V70 (2008–)

Show models by year and engine (9)

What does this fault code mean?

The engine control module (ECM) has been alerted by the central electronic module (CEM) about the accelerator pedal signal or the CAN communication. The code indicates a bus off fault, meaning the control module temporarily stops taking part in communication on the CAN network. It is a follow-on code: fix the CEM fault first, then erase this code.

Possible causes

Fault in the central electronic module (CEM)
Interruption in the CAN communication between CEM and the engine control module

What you can do

1Read the fault codes in the central electronic module (CEM) first, as the root fault is there
2Check the fuses and the connectors between the engine control module, CEM and the pedal for loose or oxidised connections
3Troubleshoot and fix the CEM faults as needed, and erase the code in the engine control module only once they are gone
4Road test the car and see whether the code comes back
5If you have a diagnostic tool, read the accelerator pedal value in live data while the pedal moves and check that it follows the movement

Symptoms you may notice2

Poor response from the accelerator pedal
Cruise control stops working altogether

What the fault can affect1

The accelerator pedal is out of action when the brake pedal is pressed

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