What does fault code ECM-P268800 mean?

Diagnostic fault code details for ECM-P268800 (Volvo C30 (2007–2013), Volvo C70 (2006–2013), Volvo C70 (2006–2013)). Repair service at OBD Tuning.

VOLVO

ECM-P268800 - Fuel Supply Heater Control 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 (41)

What does this fault code mean?

The fuel filter heater is controlled by the engine control module (ECM) through control signals. The code is set when the cable to the heater is shorted to ground, and poor connections can also cause the fault. The heating is then switched off.

Possible causes

Contact resistance or oxidation at the connections
Cable shorted to ground

What you can do

1Check that the fuse for the fuel filter heater is intact
2Use a multimeter to check that the cable to the heater has no contact with ground
3Check the connectors at the heater for contact resistance and oxidation
4If you have a diagnostic tool, activate the fuel filter heater to see whether it responds
5If nothing is found, have a workshop check the heater and its wiring

Symptoms you may notice4

Engine does not start, only cranks
Engine hard to start and cranks slowly in cold weather
Engine hard to start and cranks slowly, at unpredictable times or all the time
Uneven idle

What the fault can affect1

Fuel filter heating is switched off

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