P1584
Throttle Control Unit Input Circuit Malfunction
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)
Symptoms
- Check Engine light comes on
- Reduced engine power
- Unstable engine idling
- Dips during acceleration
- The car goes into emergency mode
Causes
- Throttle Position Sensor Malfunction
- Open or short circuit in control circuit
- Poor contact in connectors
- Malfunction of the throttle control unit
- Problems with power or grounding of the circuit
How to Fix
- Check the condition of connectors and wiring
- Test throttle position sensors
- Check resistance and continuity
- Scan the control unit for additional errors
- If necessary, replace faulty components