OBD-II code · Powertrain (generic, extended)
P2373 Fuel Volume Regulator B Control Circuit High
Same as P2370 with the control line shorted to supply. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P2373?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyControl line shorted to battery or supply
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Volume Regulator B, High Pressure Pump B
Related codes
- P0004Fuel Volume Regulator A Control Circuit High
- P2370Fuel Volume Regulator B Control Circuit Open
- P2371Fuel Volume Regulator B Control Circuit Performance
- P2372Fuel Volume Regulator B Control Circuit Low
- P2374Turbocharger Inlet Pressure Sensor B Circuit
- P2375Turbocharger Inlet Pressure Sensor B Circuit Range or Performance
- P2376Turbocharger Inlet Pressure Sensor B Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.