DTC U0140 Buick
Cylinder 2 Injector Circuit Low Input Short to Ground
Cylinder 2 Injector Circuit Low Input Short to Ground
Description
Key on or engine running, fuses in the instrument panel and the E-box in the engine compartment must be functioning, and the ground connections between the engine ad the chassis must be well connected; and the DME detected an unexpected voltage condition on the injector circuit.
Cause and Solution
Injector control circuit is open Injector power circuit (B+) is open Injector control circuit is shorted to chassis ground Injector is damaged or has failed DME is not connected or has failed Fuel pump relay has failed Fuel injectors may have malfunctioned Faulty engine speed sensor
Video Guide
Diagnostic Info
- DTC Code: U0140
- Brand: Buick