VOLVO
ECM-P219500 - O2 Sensor Signal Biased/Stuck Lean - Bank 1, Sensor 1. 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:
8 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (20)
- Volvo S60 (2011–)2011Engine B4164T, B4164T3 only
- Volvo S60 (2011–)2012–2013Engine B4164T, B4164T2, B4164T3 only
- Volvo S60 (2011–)2014–2015Engine B4164T, B4164T2, B4164T3, D4204T5 only
- Volvo S80 (2007–)2011Engine B4164T only
- Volvo S80 (2007–)2012–2013Engine B4164T, B4164T2 only
- Volvo S80 (2007–)2014Engine B4164T, B4164T2, D4204T5 only
- Volvo S80 (2007–)2015Engine B4164T, D4204T5 only
- Volvo V40 (2013–)2013Engine B4164T, B4164T3 only
- Volvo V40 (2013–)2014Engine B4164T, B4164T3, B4164T4 only
- Volvo V40 (2013–)2015Engine B4164T, B4164T3, B4164T4, D4204T14 only
- Volvo V40 Cross Country (2013–)2013–2014Engine B4164T only
- Volvo V40 Cross Country (2013–)2015Engine B4164T, D4204T14 only
- Volvo V60 (2011–)2011Engine B4164T, B4164T3 only
- Volvo V60 (2011–)2012–2013Engine B4164T, B4164T2, B4164T3 only
- Volvo V60 (2011–)2014–2015Engine B4164T, B4164T2, B4164T3, D4204T5 only
- Volvo V70 (2008–)2011Engine B4164T only
- Volvo V70 (2008–)2012–2013Engine B4164T, B4164T2 only
- Volvo V70 (2008–)2014–2015Engine B4164T, B4164T2, D4204T5 only
- Volvo XC60 (2009–)2014–2015Engine D4204T5 only
- Volvo XC70 (2008–)2014–2015Engine D4204T5 only
What does this fault code mean?
The engine control module (ECM) monitors the lambda sensor before the catalytic converter by comparing the front and rear sensor adaptation values. The code is set when the values deviate too much, or when the sensor signal shows a mixture that does not match what the ECM expects. The fault may lie in the front or rear lambda sensor circuit, the exhaust system or a damaged sensor.
Possible causes
- Leakage in the exhaust system
- Signal cable (-) short-circuited to supply voltage or ground
- Pump supply or calibration supply cable short-circuited to supply voltage or ground
- Open circuit in the signal cable (+)
- Damaged heated oxygen sensor (HO2S)
- The lambda sensor is mounted outside the gas stream
What you can do
- 1Check that the fuses are intact; their locations are in the owner's manual or on the fuse box cover
- 2Check the exhaust system for leaks
- 3Use a multimeter to check that the wire from the lambda sensor has no open circuit and is not short-circuited to supply voltage or ground
- 4Check the connectors at the lambda sensor and the engine control module for contact resistance and oxidation
- 5Have a workshop check that the lambda sensor sits correctly in the exhaust flow, and replace it if the fault remains
- 6Have a workshop check the engine control module, since an internal fault there can set this code and is then fixed by replacing it
Symptoms you may notice1
- The malfunction indicator lamp lights up or behaves abnormally
What the fault can affect3
- Lambda sensor control is switched off
- Catalytic converter diagnostics are switched off
- A calculated value is used instead of the sensor reading
General guidance for car owners. Diagnosis on the car can point to a different cause.