Description:

This diagnostic trouble code, PTQ 000190.18, indicates that the engine is running at a speed of less than 300 rpm for more than 3 seconds, which can occur when the engine stalls.

Reaction:

When this error is detected, the control software shifts the transmission to neutral to prevent potential damage and ensure safety.

Recommendations:

Inspect Engine Operation:

• Check for any signs of engine stalling or irregular operation.
• Address any issues that may cause the engine to run at a low speed, such as fuel delivery problems or ignition issues.

Check Idle Speed:

• Verify that the engine idle speed is set correctly according to the manufacturer’s specifications.
• Adjust the idle speed if it is found to be too low.

Examine Fuel System:

• Inspect the fuel system for any blockages, leaks, or faulty components.
• Replace or repair any defective parts in the fuel system to ensure proper fuel delivery.

Inspect Ignition System:

• Check the ignition system for any faults, including spark plugs, ignition coils, and wiring.
• Replace any defective components to ensure proper engine ignition.

Monitor Engine Performance:

• After addressing the above steps, monitor the engine performance to ensure it operates smoothly and does not stall.

Note:

• Regular maintenance of the engine and its related systems can prevent issues with low engine speed.
• If the problem persists despite taking the above measures, consult technical support or the manufacturer for further assistance.