VOLVO
ECM-P035700 - Ignition coil G, primary/secondary circuit. General fault information. Type of fault not specified
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS80 (2007–), XC90 (2003–)
Show models by year and engine (2)
What does this fault code mean?
This code points to ignition coil G, which is the coil for cylinder 7. The fault is not specified further in the code. The engine control module monitors the signal to the coil through a separate diagnostic line.
Possible causes
- Contact resistance and oxidation at the coil connector
- Signal wire short circuit to ground or supply voltage
- Open circuit in the signal wire
- Open circuit in the supply wire
- Diagnostic line short circuit to ground or supply voltage
- Damaged ignition coil
What you can do
- 1If you have a diagnostic tool, start the engine and read the fault status. 'Fault found' means the fault is permanent.
- 2Check that the fuses are intact.
- 3With the ignition off, check the connector to the ignition coil for cylinder 7 for contact resistance and oxidation.
- 4Use a multimeter to check that the wires to the ignition coil for cylinder 7 have no open circuit and are not shorted to ground or supply voltage.
- 5Check that the ignition coil is secure and not damaged.
- 6If the fault remains after these checks, have a workshop examine the ignition coil for cylinder 7 and its diagnostic line.
Symptoms you may notice1
- Engine misfires
What the fault can affect1
- Closed loop control of lambda is blocked
General guidance for car owners. Diagnosis on the car can point to a different cause.