P2697
Exhaust Aftertreatment Fuel Injector A Circuit / Open
The 7th injector (HC dosing for DPF active regeneration) cannot be driven. Active regeneration cannot raise exhaust temperature, soot accumulates in the DPF.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Common causes
Ordered by how often each turns out to be the cause.
- Open coil in injector solenoidCommon
- Broken control wirePossible
Parts involved
- Hc Dosing Injector
- Injector Solenoid
- Wiring Harness
P2697 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.