P1563
Quantity Adjuster Lower Stop Value
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)
Symptoms
- Unstable engine operation at idle
- Reduced engine power
- Dips during acceleration
- Increased fuel consumption
- Difficulty starting the engine
Causes
- Wear of mechanical components of the injection pump
- Regulator Solenoid Valve Problems
- Fuel system contamination
- Regulator position sensor malfunction
- Problems in the wiring harness or connectors
How to Fix
- Check the condition of the fuel filter
- Diagnose the operation of the injection pump
- Check the regulator solenoid valve
- Check the integrity of the wiring harness and connectors
- If necessary, replace or repair the injection pump