P0208 Injector Circuit Malfunction - Cylinder 8

P0208 points to an injector circuit malfunction on cylinder 8. The control module detected a problem commanding or monitoring that injector circuit.

Code details

Generic OBD-II · P0

System: Injector
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace cylinder 8 parts blindly; wiring, connector, or driver-control issues can create the same code.

Symptoms of P0208

Check-engine light, often with a misfire feel from one cylinder.
Rough idle, hesitation, or a slight loss of power.
Higher fuel use, or in some cases a fuel smell.

Common causes of P0208

A stuck, leaking, clogged, or electrically failed injector.
Injector wiring, connector, or driver-circuit faults.
Low fuel pressure or contamination affecting injector behaviour.

Useful checks before replacing parts

Check cylinder 8 injector connector fit, power feed, control circuit, harness routing, and terminal tension.
Compare injector resistance, current ramp, or balance data with other cylinders when service information supports it.
Use misfire counters and fuel-trim data to separate injector circuit failure from fuel pressure or mechanical faults.

Related OBD-II codes

These nearby injector entries can help compare wording and pin down the fault area.