Description:

This error code occurs when the electrical resistance in the circuit to the first injection valve is too high, suggesting an open circuit. This fault can lead to inadequate fuel delivery and engine performance issues.

Reaction:

The ECU may reduce engine power or alter other operational parameters to safeguard the engine from unstable running conditions caused by insufficient fuel delivery.

Recommendations:

• Check Injection Valve Circuitry: Examine all wiring and connections for breaks or disconnections that could result in an open circuit.
• Measure Circuit Resistance: Utilize a multimeter to verify resistance levels in the circuit, identifying any discrepancies from normal values.
• Repair or Replace Damaged Components: Repair any breaks or replace components as necessary to ensure continuity in the circuit.
• Reset ECU and Conduct Functional Tests: Reset the ECU to clear any stored codes and perform detailed functional tests to confirm the repair has resolved the issue.

Note:

Ensuring electrical continuity and correct resistance in the fuel injection system is crucial for consistent engine performance and reliability. Regular checks can prevent issues associated with high resistance and open circuits.