P2CA0Fuel Pressure Regulator D Exceeded Control Limits - Pressure Too Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2CA0 is the low-pressure verdict for regulator D. GM bulletin 24-NA-106 names it as a bank 2 low-pressure fault on the 2023–24 Corvette with the 5.5 L LT6 and links it, together with P228C, P01BF, P312B and several injector high-side codes, to an incorrect twelve-pin inline plug with an unsealed cavity that admits water to the bank 2 injector wiring; the fix is inspecting the connector part number and, if wrong, renewing harnesses and the rail sensor. GM's tables 23OBDG07/24OBDG07 list P2CA0 with a filtered deviation beyond minus 3 MPa held for 7 s, one trip, a sign that in the same table belongs to overpressure code P228D. Expect stumbling, misfire-like running and the MIL.
- What you may notice
- MIL on after one trip
- Stumbling or misfire-like running
- Several bank 2 injector or rail sensor codes at the same time
- Likely causes
- LikelyIncorrect 12-way in-line connector admitting water to the bank 2 harness (GM 24-NA-106)
- PossibleWeak bank 2 high-pressure pump or its quantity valve stuck
- PossibleBank 2 rail pressure sensor faulty
- RareInsufficient feed pressure from the tank pump
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €2,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.