P01C2Fuel Rail Pressure Sensor Circuit Intermittent/Erratic Bank 2
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- The bank 2 rail pressure sensor measures the pressure in a second, separate high-pressure rail on V engines that have one rail with its own sensor per bank. Many V engines connect both rails and use only one sensor (P0190–P0194); the only documented user of the bank 2 codes is GM's 5.5 litre LT6 (Corvette Z06 2023–2024) with a digital sensor per rail. P01C2 covers jumps or dropouts in the signal of the bank 2 sensor – the counterpart of P0194, for which GM uses a jump of more than 15 MPa between samples 6.25 ms apart. Loose contacts and corroded connectors are the typical causes. No manufacturer document using exactly this code was found; the logic follows the bank 1 sensor and CARB's circuit monitoring requirement.
- What you may notice
- Check engine light on (depending on manufacturer)
- Brief stumbling
- Often no symptoms
- Likely causes
- LikelyCorrosion or wear at sensor and harness contacts
- PossibleHarness chafed or loose contact
- PossibleRail pressure sensor faulty internally
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.