Engine Error
P0231
Fuel Pump Secondary Circuit Low
Severity
High
Symptoms
No start condition, fuel pump not priming
Common Causes
- Tripped inertia switch (Ford)
- Bad fuel pump ground
- Failed fuel pump relay
- Dead fuel pump motor
How to Fix
- 1 Reset inertia switch
- 2 Clean and tighten fuel pump ground
- 3 Replace relay
- 4 Replace fuel pump assembly
Estimated Repair Cost
USD
$0
–
$700
Reset switch: $0; Fuel pump assembly: $400 - $700