What does fault code ECM-P017500 mean?

Diagnostic fault code details for ECM-P017500 (Volvo S80 (2007–), Volvo S80 (2007–), Volvo S80 (2007–)). Repair service at OBD Tuning.

VOLVO

ECM-P017500 - System Too Rich (Bank 2). General Failure Information. No sub type information

System

Engine Control Module (ECM)

Volvo models this fault code applies to

Applies to the following models:

5 models

S80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)

Show models by year and engine (13)

What does this fault code mean?

The ECM gets mixture information from the oxygen sensor across different load ranges and corrects deviations with self-learning adaptations. The code is set when the mixture becomes too rich, so that the adaptations for bank 2 reach an end position. The fuel adaptation is then too high towards rich, and the control module treats this as a fault.

Possible causes

Clogged air filter
Oil level too high
Contaminated engine oil, for example with petrol from many short journeys
Leaking fuel injectors
High fuel pressure
Damaged mass air flow sensor

What you can do

1Read the code, clear it and road test the car to see whether it comes back
2Check that the air filter is not clogged
3Check the oil level sits between the dipstick marks
4Check the intake system for blockages and loose parts, such as a loose air control in the air filter housing
5If you have a diagnostic tool: see whether the fuel adaptations for bank 2 are clearly shifted towards rich across several areas
6Have a workshop check the fuel pressure and the mass air flow sensor with diagnostic equipment

Symptoms you may notice3

Check engine light (MIL) on
Poor performance
The engine misfires

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