What does fault code ECM-P208022 mean?

Diagnostic fault code details for ECM-P208022 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo V40 (2013–)). Repair service at OBD Tuning.

VOLVO

ECM-P208022 - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 1. 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 reading from the temperature sensor ahead of the catalytic converter with a calculated value. The code is set when the sensor gives an incorrect value, and a signal wire in contact with voltage can then be the cause. A damaged sensor or an incorrect reading from the mass air flow meter can also trigger it.

Possible causes

Signal wire short-circuited to voltage
Damaged exhaust temperature sensor before the catalytic converter
The mass air flow meter gives an incorrect reading, for example because of charge air leakage

What you can do

1If you have a diagnostic tool: start the engine, read the sensor value in live data and compare how it changes with engine load
2Use a multimeter to check that the signal wire has no contact with voltage
3Look for loose or corroded connections at the sensor connector
4Check that the sensor wiring is not pinched or chafed
5If the fault remains, have a workshop check the sensor with diagnostic equipment

Symptoms you may notice1

Check engine warning lamp lights or behaves abnormally

What the fault can affect1

A calculated value is used instead of the sensor signal

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