VOLVO
ECM-1462 - conditioning (A/C) pressure sensor. Signal too low
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (17)
- Volvo C30 (2007–2013)2007–2008Engine B4184S11, B4184S8, B4204S3 only
- Volvo C30 (2007–2013)2009Engine B4184S11, B4184S8, B4204S3, D4204T only
- Volvo C30 (2007–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4, D4204T only
- Volvo C30 (2007–2013)2011–2013Engine B4204S3, B4204S4 only
- Volvo C70 (2006–2013)2009–2010Engine D4204T only · Transmission MPS6 only
- Volvo S40 (2004–2013)2005Engine B4184S11 only
- Volvo S40 (2004–2013)2006Engine B4184S11, B4184S8 only
- Volvo S40 (2004–2013)2007–2008Engine B4184S11, B4184S8, B4204S3 only
- Volvo S40 (2004–2013)2009Engine B4184S11, B4184S8, B4204S3, D4204T only
- Volvo S40 (2004–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4, D4204T only
- Volvo S40 (2004–2013)2011–2012Engine B4204S3, B4204S4 only
- Volvo V50 (2004–2013)2005Engine B4184S11 only
- Volvo V50 (2004–2013)2006Engine B4184S11, B4184S8 only
- Volvo V50 (2004–2013)2007–2008Engine B4184S11, B4184S8, B4204S3 only
- Volvo V50 (2004–2013)2009Engine B4184S11, B4184S8, B4204S3, D4204T only
- Volvo V50 (2004–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4, D4204T only
- Volvo V50 (2004–2013)2011–2012Engine B4204S3, B4204S4 only
What does this fault code mean?
The ECM keeps an eye on the A/C system and judges whether the A/C pressure sensor reading is plausible. The fault is set when the signal drops below a limit, which can be caused by an electrical fault in the sensor or its connections.
Possible causes
- Open circuit in the signal wire
- Damaged A/C pressure sensor
- Signal wire shorted to ground
What you can do
- 1Read the fault code, clear it and test drive with the engine at higher revs to see whether it returns
- 2Check the A/C pressure sensor connectors for play, contact resistance and oxidation
- 3Check the signal wire to the A/C pressure sensor for breaks and shorts to ground
- 4If you have a diagnostic tool: read the A/C pressure in live data with the engine running and check that it changes when the A/C compressor is switched on
- 5If the wires are fault-free: have a workshop fit a new A/C pressure sensor
Symptoms you may notice2
- Temperature control does not work
- The A/C system does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.