What does fault code ECM-P017400 mean?

Diagnostic fault code details for ECM-P017400 (Volvo S80 (2007–), Volvo S80 (2007–), Volvo S80 (2007–)). Repair service at OBD Tuning.

VOLVO

ECM-P017400 - System Too Lean (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 code applies to bank 2, the cylinder row furthest to the rear. The ECM gets mixture information from the oxygen sensor across different load ranges, and the code is set when the mixture becomes too lean and the adaptations for bank 2 reach an end position.

Possible causes

Too high ethanol content in the fuel
Air leak in the intake pipe
Air leak in the exhaust pipe
Low fuel pressure
Damaged mass air flow sensor
Incorrectly fitted or damaged oil dipstick, causing an air leak

What you can do

1Read the code, clear it and road test the car to see whether it comes back
2Check the intake and exhaust systems for air leaks
3Check that the dipstick is seated correctly in its tube and that air does not leak around it
4If the fuel adaptations for bank 2 are clearly shifted towards lean at idle, this points to an air leak
5Have a workshop check the fuel pressure and the mass air flow sensor with diagnostic equipment

Symptoms you may notice4

Check engine light (MIL) on
Poor performance
The engine misfires
High idle speed

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