Volvo S40 (2004–2013) – Trailer Module (TRM) fault codes

20 fault codes

The same fault code can mean different things depending on model year and engine. Each meaning is therefore shown on its own row, with exactly which cars it applies to.

Code	Meaning	Applies to
TRM-1A03	Control module. Internal fault2004–2012	2004–2012
TRM-1A04	Control module. Internal fault2004–2012	2004–2012
TRM-8B01	Parking lamps. Signal too low2004–2006	2004–2006
TRM-8B02	Parking lamps. Signal too high2004–2006	2004–2006
TRM-8C01	Fog lamps. Signal too low2004–2006	2004–2006
TRM-8C02	Fog lamps. Signal too high2004–2006	2004–2006
TRM-8D01	Left-hand stop lamp. Signal too low2004–2006	2004–2006
TRM-8D02	Left-hand stop lamp. Signal too high2004–2006	2004–2006
TRM-8D03	Right-hand stop lamp. Signal too low2004–2006	2004–2006
TRM-8D04	Right-hand stop lamp. Signal too high2004–2006	2004–2006
TRM-8D05	Stop lamps. Faulty signal2004–2012	2004–2012
TRM-8E01	Back-up (reversing) lamp. Signal too low2004–2006	2004–2006
TRM-8E02	Back-up (reversing) lamp. Signal too high2004–2006	2004–2006
TRM-8F01	Left turn signal lamp. Signal too low2004–2006	2004–2006
TRM-8F02	Left turn signal lamp. Signal too high2004–2006	2004–2006
TRM-8F03	Right turn signal lamp. Signal too low2004–2006	2004–2006
TRM-8F04	Right turn signal lamp. Signal too high2004–2006	2004–2006
TRM-E001	Control module communication. Faulty communication2004–2012	2004–2012
TRM-E003	Configuration fault. Faulty configuration2004–2012	2004–2012
TRM-E010	Power supply. Voltage difference too great2004–2012	2004–2012

All control modules for the Volvo S40 (2004–2013)