DTC P0191-84: Fuel Rail Pressure Sensor Circuit Range/Performance Bank 1 - Signal below allowable range: Action
- Vehicle Conditions to Enable DTC Setting Strategy
- Engine running for greater than 1 minute
- Prioritized Checks to Perform
- Refer to the electrical circuit diagrams and check the fuel rail pressure sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Check the electrical connectors for evidence of water ingress. Check the terminals for damage and corrosion. Repair the wiring harness as necessary
- Using the Jaguar Land Rover approved diagnostic equipment, run application - ECU Diagnostics/Powertrain Control Module (PCM)/Clear Diagnostic Trouble Code(s). Retest
- Install a new fuel rail pressure sensor