P1558
Throttle Actuator Electrical Malfunction
P1558 is an OBD-II diagnostic trouble code meaning: Throttle Actuator Electrical Malfunction. Common causes: open or short circuit in the throttle drive circuit, throttle motor malfunction. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- The engine goes into emergency mode
- Power Loss
- Unstable idle speed
- Acceleration problems
Causes
- Open or short circuit in the throttle drive circuit
- Throttle motor malfunction
- Wiring Harness Problems
- Engine control unit malfunction
- Mechanical damage to the throttle assembly
How to Fix
- Check the integrity of the wiring harness to the throttle valve
- Check resistance and voltage in the drive circuit
- Test the operation of the throttle motor
- Clean the throttle valve from carbon deposits
- If necessary, replace the throttle assembly
Related codes
Error P1558 by Vehicle Brand
FAQ
What does the P1558 code mean?
P1558 is an OBD-II diagnostic trouble code that indicates: Throttle Actuator Electrical Malfunction
What causes a P1558 error code?
The most common causes of P1558 include: Open or short circuit in the throttle drive circuit; Throttle motor malfunction; Wiring Harness Problems; Engine control unit malfunction.
How do I fix a P1558 diagnostic trouble code?
To fix P1558: Check the integrity of the wiring harness to the throttle valve. Check resistance and voltage in the drive circuit. Test the operation of the throttle motor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1558?
Limited driving only, diagnose soon
How much does it cost to fix P1558?
The estimated repair cost for P1558 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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