P1237 Volvo Injector Circuit Cylinder 6 Intermittent

Possible causes

– Faulty Fuel Pump Driver Module (FPDM)
– Fuel Pump Driver Module (FPDM) harness is open or shorted
– Fuel Pump Driver Module (FPDM) circuit poor electrical connection
– Faulty fuel pump

What about the obd code?

Fuel pump driver module has detected a fault in the fuel pump secondary circuit

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– Engine will not start

P1237 Volvo Description

Fuel Pump Driver Modules (FPDM) controls the voltage to the Fuel Pump in order to maintain proper fuel pressure over the full operating range of the engine.