What does fault code ECM-130C mean?

Diagnostic fault code details for ECM-130C (Volvo S60 (2001–2009), Volvo S60 (2001–2009), Volvo S80 (1999–2006)). Repair service at OBD Tuning.

VOLVO

ECM-130C - Mass airflow (MAF) sensor. Negative offset/Positive offset

System

Engine Control Module (ECM)

Volvo models this fault code applies to

Applies to the following models:

5 models

S60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)

Show models by year and engine (7)

What does this fault code mean?

The engine control module (ECM) compares the MAF sensor's measured value with a calculated target value. The code reports a negative or positive deviation: negative means the sensor shows less air than calculated, positive means more. If the deviation shows up right after the engine is switched off, the code is an offset fault instead. A sticking EGR valve can cause it, but so can a leak after the sensor or a faulty sensor.

Possible causes

Air leak in the intake after the MAF sensor
Contact resistance in the connections
Damaged EGR valve or EGR actuator
Faulty MAF sensor

What you can do

1Read the fault code, clear it and test drive to see whether it returns
2Check for air leaks in the intake after the MAF sensor, including gaskets and hoses
3Check the MAF sensor connector for contact resistance and oxidation, and check the wiring for breaks
4If you have a diagnostic tool: with the engine idling, activate the EGR valve and see whether the air mass drops; if it does not drop, the EGR valve may be stuck
5If no leak or connector fault is found: have a workshop with diagnostic equipment check the MAF sensor and the EGR valve

Symptoms you may notice1

No noticeable symptoms for the driver

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