SAAB WIS ONLINE

P1220

Read the instructions below then start the fault diagnostic procedure.

Symptom: Check Engine on continuously or intermittently, car goes into limp-home mode with max. 60% of full power available. A screeching sound can occasionally be heard from the fuel pump when the engine is warming up.

P1220


Fuel Supply, Fuel Return, injector pump, Malfunction


Fault symptom


Check Engine on continuously or intermittently, car goes into limp-home mode with max. 60% of full power available. A screeching sound can occasionally be heard from the fuel pump when the engine is warming up.


Conditions

The following conditions apply for the DTC in question:


DTC goes on if

a: Fuel supply restricted. This can be due to a pinched or folded suction line, blocked fuel filter or by foreign objects in the suction line.

b: Fuel return restricted. This can be established by measuring the pressure level at the connections to the injection pump. The pressure on the suction line must not be below -0.2 bar under any circumstances. The pressure in the return line must not exceed 1.0 bar under any circumstances.

c: Injection pump binding. The pump must be changed.