P01C2
Fuel Rail Pressure Sensor Circuit Intermittent/Erratic Bank 2
Generic OBD-II
Common symptoms
What you'll notice
- Check and clean the fuel rail pressure sensor connectors.
- Inspect the wiring harness for any signs of damage or loose connections.
- Test the fuel rail pressure sensor for proper functionality and replace if necessary.
- Verify the fuel pump is working correctly and providing adequate pressure.
- Check the fuel injectors for any clogs or malfunctions and clean or replace as needed.
Common causes
Most likely first
- Loose or corroded connections in the fuel rail pressure sensor circuit (Bank 2)
- Malfunctioning fuel rail pressure sensor (Bank 2)
- Fuel pump failure or insufficient fuel pressure in Bank 2
- Clogged or dirty fuel injectors on Bank 2
- Engine control module (ECM) or Powertrain Control Module (PCM) malfunction for fuel rail pressure sensor circuit on Bank 2
How to diagnose & fix
Work through it in order
- Engine misfires or runs rough
- Decreased fuel efficiency
- Difficulty starting the engine
- Stalling or hesitation during acceleration
- Illumination of the check engine light
Read & clear P01C2 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.