The engine control module has detected a voltage signal above the normal operating range for the cylinder 7 deactivation intake valve control circuit. This typically indicates an electrical open circuit or a short to voltage in the solenoid or its associated wiring.
An internal open circuit or failure within the cylinder 7 deactivation valve solenoid.
Frayed, broken, or chafed wires causing an open circuit or a short to power.
Corrosion or contamination in the electrical connector leading to the solenoid, increasing resistance or causing a signal interruption.
A connector that is not fully seated or a backed-out pin in the wiring harness.
An internal failure of the ECM driver circuit, though this is highly uncommon for this specific code.
No, this code refers specifically to the electrical circuit of the deactivation valve, not the mechanical integrity of the cylinder or piston.
No. While the ECM controls the circuit, a 'Circuit High' code is almost always caused by a failed solenoid or wiring damage. The ECM should only be considered after the solenoid and wiring have been thoroughly tested.
The vehicle is generally drivable, but the cylinder deactivation system will be disabled, leading to a noticeable decrease in fuel efficiency.