P2B04
Cylinder 5 Injection Pulse Performance
The ECM detects that the injection pulse on cylinder 5 does not produce the expected combustion result. Pulse width, timing, or quantity drift compared to the bank average.
The ECM detects that the injection pulse on cylinder 5 does not produce the expected combustion result. Pulse width, timing, or quantity drift compared to the bank average.
Common causes
- high
Injector aged - flow characteristic drifted
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-1650
- medium
Fuel quality affecting injection result
A plausible cause — test and verify before replacing parts.
Typical part cost: $220-1650
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P2B04 mean?
P2B04 means "Cylinder 5 Injection Pulse Performance". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2B04?
injector aged - flow characteristic drifted; fuel quality affecting injection result — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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