OBD-II code · Powertrain (generic)
P02B9 Cylinder 8 - Injector Leaking
Cylinder 8 injector leaking fuel between commanded openings. A flow-deviating injector throws off cylinder balance — adjacent cylinders run leaner/richer to compensate, often masking the root cause until the trim limit is hit.
Is it safe to drive with P02B9?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyInjector seat or seal leaking
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Injector
Related codes
- P029DCylinder 1 - Injector Leaking
- P02A1Cylinder 2 - Injector Leaking
- P02A5Cylinder 3 - Injector Leaking
- P02A9Cylinder 4 - Injector Leaking
- P02ADCylinder 5 - Injector Leaking
- P02B1Cylinder 6 - Injector Leaking
- P02B5Cylinder 7 - Injector Leaking
- P02BDCylinder 9 - Injector Leaking
- P02C1Cylinder 10 - Injector Leaking
- P02C5Cylinder 11 - Injector Leaking
- P02C9Cylinder 12 - Injector Leaking
- P02B6Cylinder 8 - Fuel Trim at Max Limit
- P02B7Cylinder 8 - Fuel Trim at Min Limit
- P02B8Cylinder 8 - Injector Restricted
- P02BACylinder 9 - Fuel Trim at Max Limit
- P02BBCylinder 9 - Fuel Trim at Min Limit
- P02BCCylinder 9 - Injector Restricted
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.