VOLVO
ECM-2140 - Long-term fuel trim, bank 1
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsC70 (2006–2013), S40 (2004–2013), S60 (2001–2009), V50 (2004–2013), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (14)
- Volvo C70 (2006–2013)2007Engine B5254T3 only
- Volvo C70 (2006–2013)2008–2013Engine B5254T7 only
- Volvo S40 (2004–2013)2007Engine B5254T3 only
- Volvo S40 (2004–2013)2008Engine B5254T3, B5254T7 only
- Volvo S40 (2004–2013)2009–2012Engine B5254T7 only
- Volvo S60 (2001–2009)2007Engine B5204T5, B5244T5, B5254T2, B5254T4 only
- Volvo S60 (2001–2009)2008–2009Engine B5204T5, B5244T5, B5254T2 only
- Volvo V50 (2004–2013)2007Engine B5254T3 only
- Volvo V50 (2004–2013)2008–2012Engine B5254T7 only
- Volvo V70 (2000–2008)2007Engine B5204T5, B5244T5, B5254T4 only
- Volvo V70 XC / XC70 (2001–2007)2007Engine B5254T2 only
- Volvo XC90 (2003–)2007–2012Engine B5254T2 only
- Volvo XC90 (2003–)2013–2014Engine B5254T9 only
- Volvo XC90 (2003–)2015
What does this fault code mean?
This code is only stored during a quick lambda regulation test, which workshops use to check for remaining faults after a repair. If it is stored, it shows that a fault such as an air leak or low fuel pressure is still present and may cause lambda regulation problems in normal driving.
Possible causes
- Damaged heated oxygen sensor
- Intake air leakage
- Air leakage in the exhaust system
- Damaged mass air flow sensor
- Faulty signal from the affected sensor
What you can do
- 1If the code is stored after a repair, a fault is still present; fix it before going further
- 2Check the intake system for air leakage, for example the hoses to the brake booster and the EVAP valve
- 3Check the exhaust system for leaks at joints and seams
- 4Have a diagnostic tool? Read the oxygen sensor and mass air flow sensor values in live data at idle, and see whether they look plausible
- 5If no leak is found but the code is still stored, have a workshop measure the fuel pressure
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.