OBD-II code · Powertrain (generic, extended)
P2C20 Cold Start Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too High
During cold start, fuel pressure regulator A overshoots target pressure - actual rail pressure rises above the calibrated upper limit.
Is it safe to drive with P2C20?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyRegulator stuck closed at cold start
- PossibleFuel return path blocked by cold viscosity
Symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Fuel Pressure Regulator A, Fuel Rail
Related codes
- P2C1DB Camshaft Profile Actuator Position Sensor C Circuit High Bank 1
- P2C1ECold Start Fuel Pressure Regulator A Performance
- P2C1FCold Start Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too Low
- P2C21Engine Oil Temperature Sensor A/B Correlation
- P2C22Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit
- P2C23Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.