OBD-II code · Powertrain (generic)
P02A3 Cylinder 3 - Fuel Trim at Min Limit
Per-cylinder fuel trim on cylinder 3 has reached its minimum correction limit. Cylinder running too rich structurally.
Is it safe to drive with P02A3?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyInjector leaking on cylinder 3
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- 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
- Injector Cyl3
Related codes
- P029BCylinder 1 - Fuel Trim at Min Limit
- P029FCylinder 2 - Fuel Trim at Min Limit
- P02A7Cylinder 4 - Fuel Trim at Min Limit
- P02ABCylinder 5 - Fuel Trim at Min Limit
- P02AFCylinder 6 - Fuel Trim at Min Limit
- P02B3Cylinder 7 - Fuel Trim at Min Limit
- P02B7Cylinder 8 - Fuel Trim at Min Limit
- P02BBCylinder 9 - Fuel Trim at Min Limit
- P02BFCylinder 10 - Fuel Trim at Min Limit
- P02C3Cylinder 11 - Fuel Trim at Min Limit
- P02C7Cylinder 12 - Fuel Trim at Min Limit
- P02A0Cylinder 2 - Injector Restricted
- P02A1Cylinder 2 - Injector Leaking
- P02A2Cylinder 3 - Fuel Trim at Max Limit
- P02A4Cylinder 3 - Injector Restricted
- P02A5Cylinder 3 - Injector Leaking
- P02A6Cylinder 4 - Fuel Trim at Max Limit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.