P1193high severityPowertrain
Inline High Pressure Pump Fault
on 2017 Jeep Wrangler 3.6L V6 · 4WD
What this code means
The PCM has detected a fault with the inline high-pressure fuel pump. The fuel pump is not delivering the commanded fuel pressure, which can cause starting problems and reduced engine performance. Common on Chrysler GDI engines.
Symptoms
- Check Engine Light
- Hard starting or extended crank time
- Rough idle
- Loss of power under acceleration
- Engine stalling
Common causes
- Failing high-pressure fuel pump
- Clogged fuel filter restricting flow
- Fuel pump relay failure
- Wiring or connector issue at fuel pump
- Low voltage supply to fuel pump module
Diagnostic steps
- Check fuel pressure with a gauge at the fuel rail
- Monitor fuel pressure PID on scan tool during cranking and at idle
- Inspect fuel pump relay and fuse
- Test fuel pump voltage supply
- Check fuel filter for restriction
Repair notes
Replace the high-pressure fuel pump if pressure is below specification; check fuel filter and wiring first.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1