OBD-II code · Powertrain (generic, extended)
P2C26 Fuel Injector Group B Supply Sense Circuit
The ECM detects a generic fault on the supply sense circuit of fuel injector group B. Group supply voltage cannot be measured reliably.
Is it safe to drive with P2C26?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWiring or connector fault
- PossibleGroup supply fuse aged with high resistance
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Injector Group B, Wiring Harness, Ecm
Related codes
- P2C23Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Performance
- P2C24Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit Low
- P2C25Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit High
- P2C27Fuel Injector Group B Supply Sense Circuit Low
- P2C28Fuel Injector Group B Supply Sense Circuit High
- P2C29Turbocharger/Supercharger Bypass Valve B Stuck
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.