P0208
Cylinder 8 Injector A Circuit
Fuel injector circuit
Generic OBD-II
High
What it means
P0208 means the computer detected a fault in the electrical circuit that fires the cylinder 8 fuel injector. When that circuit fails the injector often stops firing, so cylinder 8 misfires and the engine runs rough and down on power. Because sustained misfires can damage the catalytic converter, it's worth fixing quickly — usually a failed injector or its wiring.
High
Can I keep driving? Drive as little as possible — an injector circuit fault usually means cylinder 8 isn't firing, causing a misfire that can overheat and damage the catalytic converter.
Common symptoms
What you'll notice
- Check-engine light on (may flash during an active misfire)
- Rough running, shaking, or misfire
- Reduced power and hesitation on acceleration
- Poor fuel economy, possible raw-fuel smell
Common causes
Most likely first
- Failed injector for cylinder 8 (open or shorted coil)Likely
- Open, shorted, or chafed wiring in the cylinder 8 injector circuitCommon
- Corroded or loose injector connectorCommon
- Poor injector driver ground or supplyLess often
- Rarely, an ECM/PCM injector-driver faultLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and confirm the misfire is on cylinder 8.
- Inspect the cylinder 8 injector connector and wiring for damage, corrosion, or a loose fit.
- Measure the injector's resistance against spec and compare with the other injectors.
- Check for injector-drive signal and proper power/ground at the connector.
- Replace the injector if it's open or shorted and the wiring is good. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0208?+
Not for long. A dead injector means cylinder 8 misfires, and sustained misfires can quickly overheat and destroy the catalytic converter. Repair it before driving much further.
Can I just clear P0208?+
It returns within a drive cycle or two while the injector or its circuit is faulty. This is a wiring/component fault, so it needs a real repair, not just a reset.
Related codes
Often seen with P0208
Read & clear P0208 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX