What does fault code PSM-0033 mean?

Diagnostic fault code details for PSM-0033 (Volvo S60 (2001–2009), Volvo S80 (1999–2006), Volvo V70 (2000–2008)). Repair service at OBD Tuning.

VOLVO

PSM-0033 - Backrest, Motor 2 (M2-). Signal missing. Intermittent fault

System

Power Seat Module (PSM)

Volvo models this fault code applies to

Applies to the following models:

5 models

S60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)

Show models by year and engine (5)

What does this fault code mean?

The fault is intermittent: the control module has on an earlier occasion received no signal from motor 2 (M2-) for the backrest. The fault is not present now. The backrest angle then cannot be adjusted.

Possible causes

Open circuit in signal cable M2-
Blown fuse (passenger compartment fuse 4)

What you can do

1Check that passenger compartment fuse 4 sits firmly and is not blown.
2Gently move the wiring between the control module and the motor while the backrest is run. If the movement stops or the fault code returns, the wiring is suspect.
3Use a multimeter to check that the wiring has no open circuit between the control module and the motor.
4If the fault remains, have a workshop check the motor and the control module.

Symptoms you may notice1

The backrest angle cannot be adjusted

General guidance for car owners. Diagnosis on the car can point to a different cause.