P2B00

Cylinder 1 Injection Pulse Performance

Moderate severity

The ECM detects that the injection pulse on cylinder 1 does not produce the expected combustion result. Pulse width, timing, or quantity drift compared to the bank average.

Common causes

Injector aged - flow characteristic drifted
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $220-1650
Fuel quality affecting injection result
A plausible cause — test and verify before replacing parts.
medium
Typical part cost: $220-1650
See all causes + fix costs
Create a free Wrenchify account to unlock the rest for P2B00.
Unlock causes
Free forever · No credit card

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.

Get the full step-by-step diagnosis

Create a free Wrenchify account to unlock the rest for P2B00.

Unlock diagnosis

Free forever · No credit card

Related codes

See related trouble codes

Create a free Wrenchify account to unlock the rest for P2B00.

Unlock related codes

Free forever · No credit card

Frequently asked questions

What does P2B00 mean?

P2B00 means "Cylinder 1 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 P2B00?

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.

Get the full P2B00 diagnosis for your vehicle

Year, make, model + step-by-step repair help — free plan included.

Diagnose P2B00