VOLVO
PAM-0003 - Parking sensor 1. Signal too low/Signal missing
System
Parking Assistance Module (PAM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
What does this fault code mean?
The parking assistance module (PAM) monitors the signal from parking sensor 1. The fault is set when the voltage in the signal wire is too low. It can come from the signal wire or its connectors short-circuiting to ground, from an open circuit in the signal wire, or from an open circuit in the power supply wire between PAM and the sensor.
Possible causes
- Short circuit to ground in the signal wire, or in its plugs between PAM and parking sensor 1
- Open circuit in the signal wire, or in its plugs between PAM and parking sensor 1
- Open circuit in the power supply wire, or in its plugs between PAM and parking sensor 1
What you can do
- 1Switch off the ignition and check that the connectors at parking sensor 1 (outer left rear) are firmly seated and not corroded
- 2If you have a multimeter: disconnect the connector and measure that the signal wire is not touching earth, meaning the car body
- 3Have a workshop check that the power supply wire and the signal wire have no open circuits, and replace the parking sensor if no fault is found
Symptoms you may notice2
- The information lamp is lit
- A message is shown in the text display
General guidance for car owners. Diagnosis on the car can point to a different cause.