The injector offset adaptation for fuel injector B on cylinder 4 has reached the maximum learning limit. Injector flow trends above nominal beyond compensation.
Medium severity. Can I keep driving?Drive as little as possible and go to a repair shop. If you smell fuel or the engine is shaking badly, do not keep driving.
Cylinder 4 is numbered according to the manufacturer: check your engine's manual before working on it.
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Most likely causes
- Injector leaking - increased flow
- Local rail pressure drift high
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
- It affects emissions.
What each character of P2C59 means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- C: Subsystem depends on the code range
- 59: Specific fault in that system
Frequently asked questions
Can I keep driving with code P2C59?
Drive as little as possible and go to a repair shop. If you smell fuel or the engine is shaking badly, do not keep driving.
What causes code P2C59?
The most common causes are: injector leaking - increased flow; local rail pressure drift high.
Related codes
- P2C57Cylinder 3 Fuel Injector B Offset Learning At Max Limit
- P2C5BCylinder 5 Fuel Injector B Offset Learning At Max Limit
- P2C55Cylinder 2 Fuel Injector B Offset Learning At Max Limit
- P2C5DCylinder 6 Fuel Injector B Offset Learning At Max Limit
- P2C53Cylinder 1 Fuel Injector B Offset Learning At Max Limit
- P2C5FCylinder 7 Fuel Injector B Offset Learning At Max Limit
- P2C61Cylinder 8 Fuel Injector B Offset Learning At Max Limit
- P232ECylinder 12 Fuel Injector A Offset Learning At Max Limit
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.