VOLVO
ECM-0132 - Front heated oxygen sensor (HO2S), bank 1.Signal too high
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (14)
- Volvo C30 (2007–2013)2007–2009Engine B4164S3, B4184S11, B4184S8, B4204S3 only
- Volvo C30 (2007–2013)2010Engine B4164S3, B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo C30 (2007–2013)2011–2012Engine B4164S3, B4204S3, B4204S4 only
- Volvo C30 (2007–2013)2013Engine B4204S3, B4204S4 only
- Volvo S40 (2004–2013)2005Engine B4164S3, B4184S11 only
- Volvo S40 (2004–2013)2006Engine B4164S3, B4184S11, B4184S8 only
- Volvo S40 (2004–2013)2007–2009Engine B4164S3, B4184S11, B4184S8, B4204S3 only
- Volvo S40 (2004–2013)2010Engine B4164S3, B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo S40 (2004–2013)2011–2012Engine B4164S3, B4204S3, B4204S4 only
- Volvo V50 (2004–2013)2005Engine B4164S3, B4184S11 only
- Volvo V50 (2004–2013)2006Engine B4164S3, B4184S11, B4184S8 only
- Volvo V50 (2004–2013)2007–2009Engine B4164S3, B4184S11, B4184S8, B4204S3 only
- Volvo V50 (2004–2013)2010Engine B4164S3, B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo V50 (2004–2013)2011–2012Engine B4164S3, B4204S3, B4204S4 only
What does this fault code mean?
The engine control module (ECM) has registered that the signal from the front lambda sensor on bank 1 has stayed above a set value for a period of time, and treats this as a fault. The lambda sensor measures oxygen content in the exhaust and is important for keeping the fuel-air mixture correct. The most common cause is a signal wire shorted to voltage, or a damaged sensor.
Possible causes
- Signal wire from the lambda sensor shorted to voltage
- Damaged front lambda sensor, bank 1
- Damaged engine control module (uncommon)
What you can do
- 1Read and note the code, clear it, and road test to see whether it returns
- 2Check that the connector at the lambda sensor is fully engaged and free from corrosion
- 3Follow the cable from the lambda sensor and look for chafing, pinched sections and melted insulation, especially near the exhaust pipe
- 4With the ignition on and the sensor connector unplugged, use a multimeter to check that the signal wire has no voltage. Voltage there means the wire is shorted to supply
- 5With a diagnostic tool, a lambda value that stays constantly high in live data, even with the throttle released, points to the signal
- 6If the fault returns anyway, have a workshop with diagnostic equipment check the wiring and control module before the sensor is replaced
Symptoms you may notice2
- Malfunction indicator lamp (MIL) lit
- Engine may start poorly or sometimes not at all
General guidance for car owners. Diagnosis on the car can point to a different cause.