P01D8 — Cylinder 7 Injection Timing Performance - Over Advanced

The controller reports cylinder 7 injection timing as more advanced than the monitor's accepted range. This code identifies a timing-performance deviation; it does not by itself prove a failed injector, sensor or fuel pump. Confirm the code's vehicle applicability and monitor conditions in manufacturer service information.

Affected system: Powertrain

Symptoms

• Warning light may illuminate
• Related system function may be impaired
• Vehicle-specific symptoms vary

Possible causes

• Fuel supply or pressure issue, restricted injector, actuator fault, connector or wiring damage
• Related wiring, connector, power or ground fault
• Vehicle-specific mechanical or control issue

What to check

• Record stored and pending codes and freeze-frame data
• Check fuel supply and pressure readings, electrical supply and ground, and the relevant injector or regulator circuit before replacing parts.
• Confirm measured values against the vehicle service information
• Retest under the conditions that set the code
• Check fuel supply and pressure readings, electrical supply and ground, and the relevant injector or regulator circuit before replacing parts.
• Repair the verified cause and confirm the code does not return

Also written as: P01D8-00, P01D800, PO1D8 (some scan tools add the fault-type byte, e.g. -00).