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.
Medium severity. Can I keep driving?If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
Cylinder 8 is numbered according to the manufacturer: check your engine's manual before working on it.
Symptoms
- Check engine light
- Misfire on cylinder 8 (P0308), especially at idle
Most likely causes
- Cylinder 8 injector not opening properly
- Heat-damaged harness section at the rear of the engine
- Loose or corroded injector 8 connector
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
- It affects emissions.
What each character of P2B07 means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- B: Subsystem depends on the code range
- 07: Specific fault in that system
Frequently asked questions
Can I keep driving with code P2B07?
If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
What causes code P2B07?
The most common causes are: cylinder 8 injector not opening properly; heat-damaged harness section at the rear of the engine; loose or corroded injector 8 connector.
Related codes
- P2B0FCold Start Cylinder 8 Injection Pulse Performance
- P2B06Cylinder 7 Injection Pulse Performance
- P2B96Injection Pulse Performance
- P02F5Cylinder 8 Injector Circuit Range/Performance
- P0208Cylinder 8 Injector A Circuit/Open
- P0308Cylinder 8 Misfire Detected
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.