VOLVO
ECM-1400 - Manifold absolute pressure (MAP) sensor. Signal too low. Intermittent fault
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), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008)
Show models by year and engine (14)
- Volvo C70 Cabriolet (1998–2005)2000Engine B5244S only
- Volvo C70 Coupé (1998–2002)1999Engine B5254S DENSO only
- Volvo C70 Coupé (1998–2002)2000Engine B5244S only
- Volvo S60 (2001–2009)2001Engine B5244S, B5244S2 only
- Volvo S60 (2001–2009)2002Engine B5244S, B5244S2, B5244SG, B5244SG2 only
- Volvo S70 (1997–2000)1999Engine B5254S DENSO only
- Volvo S70 (1997–2000)2000Engine B5244S, B5244S2, B5244SG, B5244SG2 only
- Volvo S80 (1999–2006)1999–2000Engine B5244S, B5244S2 only
- Volvo S80 (1999–2006)2001Engine B5244S, B5244S2, B5244SG only
- Volvo S80 (1999–2006)2002Engine B5244S, B5244S2, B5244SG, B5244SG2 only
- Volvo V70 (1997–2000)1999Engine B5254S DENSO only
- Volvo V70 (1997–2000)2000Engine B5244S, B5244S2, B5244SG, B5244SG2 only
- Volvo V70 (2000–2008)2001Engine B5244S, B5244S2, B5244SG only
- Volvo V70 (2000–2008)2002Engine B5244S, B5244S2, B5244SG, B5244SG2 only
What does this fault code mean?
The fault is intermittent, meaning it has occurred but does not necessarily remain present right now. The engine control module (ECM) measures intake manifold pressure with a sensor and sets the fault when the sensor circuit is shorted to ground or voltage, or when it has a break.
Possible causes
- Damaged intake manifold pressure sensor
- Open circuit in the signal wire
- Signal wire shorted to ground
- Signal wire shorted to voltage
What you can do
- 1Read the fault code, clear it and test drive to see whether it returns
- 2Move and flex the pressure sensor wiring with the ignition on and see whether the fault code or the signal changes
- 3Check the pressure sensor connector for contact resistance and oxidation
- 4Check the wire to the pressure sensor for breaks, pinch damage and chafing
- 5If you have a diagnostic tool: follow the pressure sensor value in live data while you move the wiring; if the value jumps or disappears, the wiring is most likely the cause
- 6If the wiring is fine: have a workshop check the pressure sensor
Symptoms you may notice1
- Engine warning lamp comes on
What the fault can affect1
- A value from the MAF sensor is used instead
General guidance for car owners. Diagnosis on the car can point to a different cause.