P1186
Fuel Pressure Monitoring-Minimum Pressure at Engine Speed Too Low
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)
Symptoms
- Loss of engine power
- Misfires
- Unstable engine idling
- Difficulty starting the engine
- Increased fuel consumption
Causes
- Fuel pump malfunction
- Clogged fuel filter
- Problems with the fuel pressure regulator
- Leaks in the fuel system
- Problems with wiring or sensors
How to Fix
- Check fuel pressure using a pressure gauge
- Replace the fuel filter if necessary
- Check the operation of the fuel pump
- Inspect the fuel pressure regulator
- Check the fuel system for leaks