P2B06Cylinder 7 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
- P2B06 is the warm-engine pulse check for cylinder 7 and so practically limited to V8 and larger engines. No manufacturer documents P2B06 publicly in its own entry. In GM's 2025 V8 tables the code appears only in the lists of a shared calibration: a pulse counts as missing when the measured opening magnitude stays below a fixed value of 75 across rail pressures from 0.4 to 24 MPa. The warm per-cylinder faults GM actually reports on that V8 are its offset-learning limits P10AF/P10B0 for cylinder 7. CARB treats the injector as an output part whose response to a command must be verified. Typical follow-up is a misfire count on cylinder 7; the cold-start sibling is P2B0E.
- What you may notice
- Engine light on after two trips
- Misfire on cylinder 7 (P0307), rough idle
- Likely causes
- LikelyCylinder 7 injector with weak or missing armature lift
- PossibleWiring to injector 7 damaged by heat or chafing
- RareRail pressure outside the plausible range, distorting the opening signal
- 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.