VOLVO
ECM-P218700 - System Too Lean at Idle - Bank 1. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–)
Show models by year and engine (20)
- Volvo S60 (2011–)2011Engine B4164T, B4164T3, B4204T6, B4204T7 only
- Volvo S60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo S60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo S80 (2007–)2010Engine B4204T6 only
- Volvo S80 (2007–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo S80 (2007–)2012–2014Engine B4164T, B4164T2, B4204T6, B4204T7 only
- Volvo S80 (2007–)2015Engine B4164T only
- Volvo V40 (2013–)2013Engine B4164T, B4164T3 only
- Volvo V40 (2013–)2014–2015Engine B4164T, B4164T3, B4164T4 only
- Volvo V40 Cross Country (2013–)2013–2015Engine B4164T only
- Volvo V60 (2011–)2011Engine B4164T, B4164T3, B4204T6, B4204T7 only
- Volvo V60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo V60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo V70 (2008–)2010Engine B4204T6 only
- Volvo V70 (2008–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo V70 (2008–)2012–2014Engine B4164T, B4164T2, B4204T7 only
- Volvo V70 (2008–)2015Engine B4164T, B4164T2 only
- Volvo XC60 (2009–)2010Engine B4204T6 only
- Volvo XC60 (2009–)2011–2012Engine B4204T6, B4204T7 only
- Volvo XC60 (2009–)2013–2015Engine B4204T7 only
What does this fault code mean?
The engine control module (ECM) adjusts injection from the lambda sensor reading to keep the mixture at λ=1. This code concerns the idle range and is set when the correction has to be made close to its maximum there, meaning the idle mixture runs too lean. The fault may lie in the mass air flow sensor, a leak in the intake, the injectors, the lambda sensor or the calculated ethanol content.
Possible causes
- Damaged mass air flow (MAF) sensor
- Air leakage in the intake system
- Damaged or incorrect type of injectors
- Damaged heated oxygen sensor (HO2S)
- Incorrectly calculated ethanol content
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 intake system for air leaks, including past the EVAP valve and the brake booster
- 3Check that the mass air flow sensor is not damaged or dirty
- 4Think back on how the car has been refuelled; if the calculated ethanol content may be wrong, have a workshop check the ethanol calculation
- 5Have a workshop confirm that the injectors are intact and of the correct type
- 6Replace the lambda sensor if nothing above cures the fault, since a damaged lambda sensor can also set this code
Symptoms you may notice1
- The malfunction indicator lamp lights up or behaves abnormally
General guidance for car owners. Diagnosis on the car can point to a different cause.