Malfunctions

Fault code information

● MID (”Message Identification Description”): The MID consists of a number which designates the control unit that sent the fault code message. (e.g. the engine control unit).

● PID (”Parameter Identification Description”): The PID consists of a number that designates a parameter (value) to which the fault code relates (oil pressure, for example).

● PPID (”Proprietary PID”): The same as the PID, but this is a Volvo-specific parameter.

● SID (”Subsystem Identification Description”): The SID consists of a number that designates a component to which the fault code relates (tachometer, for example).

● PSID (”Proprietary SID”): The same as the SID, but this is a Volvo-specific component.

● FMI (”Failure Mode Identifier”): FMI indicates the type of fault (please refer to the FMI table below).

Volvo-specific

for injectors (MID 128, SID 1–6)

FMIHelp

2 Short circuit to battery voltage, unit injector high voltage side

3 Short circuit to battery voltage, unit injector low voltage side

4 Short circuit to battery negative, unit injector low voltage or high voltage side

5 Open circuit in unit injector circuit

NOTE!

The following must be done before fault tracing continues, to avoid changing functional sensors:

● If there is an active / inactive fault code. Remove the connector from the sensor. Check that there is no oxidation and that the connector pins are not damaged.

If there is a fault, please refer to ”Fault Tracing the Cables and Connectors”.

Note. Some fault codes become inactive when the engine is stopped. Start the engine to check whether the fault code is still inactive with the engine running.

● After an action with the connector

Put the connector* back. Check if the fault code becomes inactive.

If the fault remains, measure the cables and sensors to check them, as instructed.

*NOTE! No grease in the connector.