VOLVO
ECM-260A - Long-term fuel trim. Lower limit
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:
7 modelsC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 XC (1998–2000), XC90 (2003–)
Show models by year and engine (14)
- Volvo C70 Cabriolet (1998–2005)1999, 2001–2005
- Volvo C70 Cabriolet (1998–2005)2000All engines except: B5244S
- Volvo C70 Coupé (1998–2002)1999All engines except: B5254S DENSO
- Volvo C70 Coupé (1998–2002)2000All engines except: B5244S
- Volvo C70 Coupé (1998–2002)2001–2002
- Volvo S70 (1997–2000)1999Engine B5204T3, B5204T4, B5234T3, B5234T7, B5254T only
- Volvo S70 (1997–2000)2000Engine B5204T3, B5204T4, B5234T3, B5234T7, B5244T only
- Volvo S80 (1999–2006)1999Engine B6284T, B6304S3 only
- Volvo S80 (1999–2006)2000–2001Engine B6284T, B6294S only
- Volvo S80 (1999–2006)2002–2004Engine B6294S2, B6294T only
- Volvo V70 (1997–2000)1999Engine B5204T3, B5204T4, B5234T3, B5234T7, B5234T8, B5254T only
- Volvo V70 (1997–2000)2000All engines except: B5244S, B5244S2, B5244SG, B5244SG2, D5252T MSA 15.8
- Volvo V70 XC (1998–2000)1999–2000
- Volvo XC90 (2003–)2003–2004Engine B6294T only
What does this fault code mean?
The engine control module (ECM) adjusts the fuel quantity based on the oxygen sensor signal using a long-term correction. When the correction reaches its lower limit, the mixture is too rich, and the ECM has reduced the fuel quantity as far as it is allowed to.
Possible causes
- High fuel pressure
- Leaking injectors
- Faulty mass air flow (MAF) sensor
- Contaminated engine oil
- Oil level too high
What you can do
- 1Make sure the oil sits between the min and max marks on the dipstick, and that it does not appear diluted or smell of fuel
- 2If you have diagnostic equipment, read the long-term correction with the engine idling and see whether the value is steady
- 3Have a workshop check the fuel pressure and any leaking injectors if the fault remains
- 4Have a workshop check the mass air flow sensor if the fault remains after these checks
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.