Description:

Error code ECU 000612.03 indicates a fault in the circuit of injection valves 4 to 6, with a condition of being open or shorted to a 12-volt source. This condition can lead to uncontrolled fuel injector operation, affecting engine performance.

Reaction:

The ECU may deactivate the affected injectors to prevent engine damage due to over-fueling or erratic fuel delivery.

Recommendations:

• Inspect Injector Wiring: Check for damaged or frayed wiring that may be causing a short to the power supply.
• Test Electrical Connections: Utilize a multimeter to identify and confirm the source of the high voltage issue.
• Repair or Replace Faulty Wiring: Address any issues by repairing or replacing damaged wires or connectors.
• Reevaluate System Functionality: After repairs, perform a system check to ensure that all injectors are functioning correctly and the issue is resolved.

Note:

Prompt attention to injector circuit faults is crucial to maintaining engine performance and preventing potential damage.