P2C27

Q: 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.

Fuel Injector Group B Supply Sense Circuit Low

High severity

Voltage on the supply sense circuit of fuel injector group B is below the expected window. Indicates collapsed supply or short to ground.

Common causes

Supply rail collapsed under load
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $130-770
Sense wire shorted to ground
A plausible cause — test and verify before replacing parts.
medium
Typical part cost: $130-770
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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

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Frequently asked questions

What does P2C27 mean?

P2C27 means "Fuel Injector Group B Supply Sense Circuit Low". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.

What are the most common causes of P2C27?

supply rail collapsed under load; sense wire shorted to ground; connector pins corroded - high contact resistance — 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?

This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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