P2B07Cylinder 8 Injection Pulse Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2B07 closes the warm-running row at cylinder 8, and the engine-wide check counting missed pulses over all cylinders is P2B96. No manufacturer documents P2B07 publicly as a separate monitor; GM's 2025 V8 tables mention it only in the code lists of shared calibration tables, while their cylinder 8 warm faults run as P10B1/P10B2. If a scan tool still shows P2B07, the logic matches the GM principle: injector coil voltage is sampled, and a missing opening trace means the pulse was not delivered. On many V8 designs cylinder 8 sits at the rear of a bank, close to the bulkhead and hot exhaust parts, so look at harness heat damage as well as the injector itself. Cold start: P2B0F.
- What you may notice
- Check engine light
- Misfire on cylinder 8 (P0308), especially at idle
- Likely causes
- LikelyCylinder 8 injector not opening properly
- PossibleHeat-damaged harness section at the rear of the engine
- RareLoose or corroded injector 8 connector
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €1,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.