Possible Causes
- Injection Problem: Poor regulation of the injected fuel quantity.
- Faulty Sensor: Malfunctioning air/fuel ratio sensor or oxygen sensor.
- Air Intake Leak: Presence of an uncontrolled air intake disrupting the air/fuel mixture.
- Clogged or Defective Injectors: Poor fuel atomization.
- Electrical Issue: Damaged wiring, short circuit, or poor connection in the injection circuit.
How to Fix Code P1131 HYUNDAI?
- Check the possible causes mentioned above.
- Visually inspect the wiring harness and connectors of the injection circuit and oxygen sensor.
- Look for visible defects: damaged wires, corroded connectors, broken or misaligned pins.
- Check for air leaks in the intake system and ensure the injectors are functioning properly.
- Perform an electronic diagnostic to verify sensor values and make necessary adjustments.
Possible Symptoms
- Check engine light on (or warning light indicating an imminent problem).
- Unstable idle or frequent stalling.
- Poor fuel consumption and reduced performance.
Meaning of Code P1131 HYUNDAI
Code P1131 is generally related to fuel injection quantity adjustment. This is a generic description, but the manufacturer Hyundai may provide a more precise explanation depending on the vehicle model and year. To date, there is no additional specific information available about this OBDII code for Hyundai.