What does fault code ECM-P111822 mean?

Diagnostic fault code details for ECM-P111822 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo V40 (2013–)). Repair service at OBD Tuning.

VOLVO

ECM-P111822 - Manifold Air Temperature Circuit Low. General Signal Failures. Signal too high

System

Engine Control Module (ECM)

Volvo models this fault code applies to

Applies to the following models:

8 models

S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)

Show models by year and engine (8)

What does this fault code mean?

The engine control module (ECM) compares the intake air temperature after the EGR supply with other temperatures in the car, such as the mass airflow meter, charge air, ambient, engine oil and coolant readings. The code is stored when the intake temperature deviates too much from these for a longer period, and the sensor signal is too high.

Possible causes

Short circuit to ground in the signal wiring
Intake air temperature sensor is damaged

What you can do

1Read and note the code, clear it, then drive after a long standstill to see whether it returns
2Check that the connector at the sensor in the inlet manifold is secure and free from corrosion
3Use a multimeter to check that the signal wire has no contact with ground (the body)
4If you have a diagnostic tool: compare the intake air temperature in live data with coolant and ambient temperature after a standstill, and see whether it deviates clearly
5If the wiring and connector are fine: have a workshop check the sensor, which is built into the mass airflow meter

Symptoms you may notice1

No noticeable symptoms for the driver

What the fault can affect1

The control module calculates a value instead of using the sensor signal

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