What does fault code ECM-P042700 mean?

Diagnostic fault code details for ECM-P042700 (Volvo C30 (2007–2013), Volvo C70 (2006–2013), Volvo C70 (2006–2013)). Repair service at OBD Tuning.

VOLVO

ECM-P042700 - Particulate Filter Temperature Sensor Circuit Low (Bank 1, Sensor Circuit 2). General Failure Information. No sub type information

System

Engine Control Module (ECM)

Volvo models this fault code applies to

This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.

Applies to the following models:

13 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–), XC90 (2003–)

Show models by year and engine (46)

What does this fault code mean?

The fault concerns the temperature sensor before the particle filter on bank 1 and is set when the signal from it is incorrect. The code is named for a low signal, and the car then uses a calculated temperature instead of the sensor reading.

Possible causes

Fault codes ECM-P042700 and ECM-P042800 may share the same cause and should be read together
Signal cable short-circuited to supply voltage
Signal cable short-circuited to ground
Open circuit in the signal cable
Contact resistance or oxidation in the connections
Damaged particle filter temperature sensor

What you can do

1Start the engine and read the fault status with a diagnostic tool, if you have one
2Check that the connectors to the temperature sensor before the particle filter are firmly seated and not oxidised
3Use a multimeter to check that the signal cable has no break and is not short-circuited to ground or supply voltage
4Read and clear the fault code, then road test the car to see whether it comes back
5If the fault remains, have a workshop check the temperature sensor before the particle filter

Symptoms you may notice2

The car lacks power
The Check engine (malfunction indicator) light comes on or behaves abnormally

What the fault can affect2

A calculated temperature is used instead
The car goes into limp-home mode

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

ECM-P042700 - Particulate Filter Temperature Sensor Circuit Low (Bank 1, Sensor Circuit 2). General Failure Information. No sub type information

Volvo models this fault code applies to

Particulate Filter Temperature Sensor Circuit Low (Bank 1, Sensor Circuit 2). General Failure Information. No sub type information

Catalyst Temperature Sensor Low Input (Bank 1). General Failure Information. No sub type information

Applies to the following models:

What does this fault code mean?

Possible causes

What you can do

Symptoms you may notice2

What the fault can affect2

ECM-P042700 - Particulate Filter Temperature Sensor Circuit Low (Bank 1, Sensor Circuit 2). General Failure Information. No sub type information

Volvo models this fault code applies to

Particulate Filter Temperature Sensor Circuit Low (Bank 1, Sensor Circuit 2). General Failure Information. No sub type information

Catalyst Temperature Sensor Low Input (Bank 1). General Failure Information. No sub type information

Applies to the following models:

What does this fault code mean?

Possible causes

What you can do

Symptoms you may notice2

What the fault can affect2