What Does P1580 Mean?
The PCM has detected a condition requiring it to override the electronic throttle control system. This typically occurs when the PCM detects a safety-critical issue with throttle operation or when communication between throttle components is compromised.
Safety Warning
Vehicle may enter limp mode with severely limited throttle response. Unsafe for normal driving conditions; reduced acceleration capability may create hazardous situations in traffic.
Common Causes
35%
Faulty throttle body actuator or motor
30%
Failed accelerator pedal position sensor
20%
Wiring harness damage or connector corrosion in throttle control circuit
15%
PCM internal fault or software corruption
Diagnostic Steps
1
Step 1: Monitor live data for throttle position sensor, accelerator pedal position, and commanded vs actual throttle angle
2
Step 2: Perform throttle body relearn/adaptation procedure per manufacturer specifications
3
Step 3: Inspect throttle body for carbon buildup, sticking, or mechanical binding
4
Step 4: Test accelerator pedal position sensor voltage signals across full pedal travel
5
Step 5: Check wiring continuity and resistance between PCM, throttle body, and APP sensor
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
The PCM has detected a condition requiring it to override the electronic throttle control system. This typically occurs when the PCM detects a safety-critical issue with throttle operation or when communication between throttle components is compromised.
The most common cause of P1580 (Electronic Throttle Monitor PCM Override) is: Faulty throttle body actuator or motor
Typical repair costs for P1580 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may enter limp mode with severely limited throttle response. Unsafe for normal driving conditions; reduced acceleration capability may create hazardous situations in traffic.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1580 to identify the root cause.
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Quick Info
Category
Powertrain
System
Electronic Throttle Control
Difficulty
Type
Manufacturer
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