P1526 GMC Code - Minimum Throttle Position Not Learned Conditions
Quick Answer
With the engine speed under 250 rpm, system volts over 10v, Engine Coolant Temperature (ECT) sensor input 41°F-212°F, Intake Air Temperature (IAT) sensor input over 41°F, VSS at 0 mph, Accelerator Pedal Position (APP) sensor input less than 15%, Minimum Closed Throttle position not learned, the Powertrain Control Module (PCM) detects the Throttle Position (TP) sensor 1 input was not between 0.24v-0.82v, and that the TP sensor 2 input was not between 4.2v-4.8v with the throttle valves commanded closed. Common causes include Faulty Throttle Position (TP) Sensor, Throttle Position (TP) Sensor harness is open or shorted, Throttle Position (TP) Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1526 GMC indicates Minimum Throttle Position Not Learned Conditions.
- Common causes
- Common causes include Faulty Throttle Position (TP) Sensor, Throttle Position (TP) Sensor harness is open or shorted, Throttle Position (TP) Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1526 GMC Description
What are the Possible Causes of the DTC P1526 GMC?
- Faulty Throttle Position (TP) Sensor
- Throttle Position (TP) Sensor harness is open or shorted
- Throttle Position (TP) Sensor circuit poor electrical connection
How to Fix the DTC P1526 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1526 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1526 GMC Code
What does the OBDII code P1526 on a GMC indicate?
The code P1526 indicates that the vehicle’s minimum throttle position has not been learned by the throttle actuator control (TAC) system.
What are the common symptoms of the P1526 code on a GMC?
Symptoms may include reduced engine performance, poor throttle response, and illumination of the check engine light.
What causes the P1526 code to appear on a GMC vehicle?
Common causes include a faulty throttle body, wiring issues, a damaged throttle position sensor, or a failure to properly perform the throttle position relearn procedure.
How can I fix the P1526 code on my GMC?
Fixing the P1526 code may involve performing a throttle position relearn procedure, inspecting and repairing throttle body wiring, or replacing a faulty throttle body or sensor.
Do I need a professional mechanic to repair the P1526 code on my GMC?
While some issues like performing a relearn procedure can be done with an OBDII scanner, diagnosing and replacing components may require professional expertise.
Can a dirty throttle body trigger the P1526 code?
Yes, a dirty throttle body can prevent the throttle position from being learned correctly, potentially triggering the P1526 code.
How do I perform the throttle position relearn procedure for a GMC vehicle?
The procedure typically involves turning the ignition on and off in specific sequences or using an advanced OBDII scanner to initiate the relearn process. Refer to your vehicle’s manual for exact steps.
Is it safe to drive with the P1526 code active?
Driving with the P1526 code may result in reduced engine performance and throttle response. It is recommended to address the issue promptly.
Can a faulty accelerator pedal position sensor cause the P1526 code?
Yes, a malfunctioning accelerator pedal position sensor can lead to issues with throttle position learning and trigger the P1526 code.
Will clearing the code with an OBDII scanner fix the P1526 issue?
Clearing the code may remove the warning temporarily, but the underlying issue must be resolved to prevent the code from reappearing.
Discuss the causes and fixes for P1526 GMC OBDII Code
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