OBD-II code · Powertrain (generic)
P0283 Cylinder 8 Injector A Circuit High
Cylinder 8 injector A control voltage above expected range. 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 P0283?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWiring shorted to battery
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- Parts involved
- Injector Cyl8, Injector Wiring
Related codes
- P0274Cylinder 5 Injector A Circuit High
- P0277Cylinder 6 Injector A Circuit High
- P0280Cylinder 7 Injector A Circuit High
- P0286Cylinder 9 Injector A Circuit High
- P0289Cylinder 10 Injector A Circuit High
- P0292Cylinder 11 Injector A Circuit High
- P0295Cylinder 12 Injector A Circuit High
- P21DCCylinder 1 Injector B Circuit High
- P21DFCylinder 2 Injector B Circuit High
- P21E1Cylinder 3 Injector B Circuit High
- P21E3Cylinder 4 Injector B Circuit High
- P21E5Cylinder 5 Injector B Circuit High
- P0281Cylinder 7 Contribution/Balance
- P0282Cylinder 8 Injector A Circuit Low
- P0284Cylinder 8 Contribution/Balance
- P0285Cylinder 9 Injector A Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.