P1237high severityPowertrain
Fuel Pump Secondary Circuit Malfunction
on 2016 Lincoln MKX 3.7L V6 · AWD
What this code means
The fuel pump secondary circuit has a malfunction. The PCM has detected an issue with the return signal from the FPDM indicating the fuel pump is not operating as commanded.
Symptoms
- Engine cranks but will not start
- Engine stalls
- Intermittent no-start
- Loss of power
Common causes
- Faulty FPDM
- Corroded fuel pump connector
- Failed fuel pump
- Wiring damage
- Blown fuel pump relay
Diagnostic steps
- Check fuel pump relay
- Inspect FPDM and wiring
- Test fuel pump directly with power
- Check fuel pressure at rail
Repair notes
Replace FPDM or fuel pump as needed. Repair corroded wiring.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1