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Engine-Codes – Generic – P1527

P1527 Code - Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range

Quick Answer

When the P1527 diagnostic trouble code (DTC) appears, it indicates that the Throttle Position Sensor (TPS) has learned that the closed throttle degree is out of the acceptable range. Common causes include Faulty Throttle Position Sensor, Wiring or connector issues related to the TPS, Carbon buildup on the throttle body. 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
P1527 indicates Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range.
Common causes
Common causes include Faulty Throttle Position Sensor, Wiring or connector issues related to the TPS, Carbon buildup on the throttle body.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P1527 Description

When the P1527 diagnostic trouble code (DTC) appears, it indicates that the Throttle Position Sensor (TPS) has learned that the closed throttle degree is out of the acceptable range. The TPS is a crucial component that monitors the position of the throttle valve in the engine. It provides the engine control module (ECM) with information regarding the throttle position, allowing the ECM to adjust fuel delivery and ignition timing accordingly. When the closed throttle degree is out of range, it can lead to incorrect fuel delivery, affecting the engine's performance and efficiency. This issue can result in rough idling, poor acceleration, and potentially even stalling. If left unresolved, it may lead to further damage to the engine and other related systems.

OBDII Code P1527 - Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range
P1527 Code - Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range

Common Causes of P1527

  1. Faulty Throttle Position Sensor
  2. Wiring or connector issues related to the TPS
  3. Carbon buildup on the throttle body
  4. Incorrect throttle calibration
  5. ECM software or hardware malfunction

Symptoms of P1527

  1. Rough idling or unstable engine speed
  2. Decreased fuel efficiency
  3. Delayed or hesitant acceleration
  4. Engine stalling or shutting off unexpectedly
  5. Illuminated check engine light

How to Fix P1527

  1. Inspect the Throttle Position Sensor for any signs of damage or wear.
  2. Check the wiring and connectors associated with the TPS for any corrosion or loose connections.
  3. Clean the throttle body to remove any carbon buildup that may be affecting its operation.
  4. Re-calibrate the throttle position sensor according to the manufacturer's specifications.
  5. If necessary, replace the Throttle Position Sensor or any other faulty components.

Cost to Fix P1527

The cost of repairing a P1527 code can vary depending on the specific cause of the issue. On average, replacing a Throttle Position Sensor can cost between $100 and $200, including parts and labor. However, additional costs may apply if other components need to be replaced or if extensive diagnostics are required. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model. Keep in mind that labor rates and part prices may differ based on the location and type of repair shop.

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Code P1527 Information for Specific Makes

  • P1527 Audi — Intake Camshaft Control Circuit Bank 1 Short to Ground
  • P1527 BMW — Camshaft Position Actuator 'A' Control Circuit Signal Low Bank 1
  • P1527 Buick — Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range
  • P1527 Cadillac — Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range
  • P1527 Chevrolet — Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range
  • P1527 GMC — Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range
  • P1527 Hyundai — Sensor Supply Voltage 2 Malfunction
  • P1527 Mazda — Bypass Air Solenoid Valve Short / Open Circuit
  • P1527 MINI — Camshaft Position Actuator 'A' Control Circuit Signal Low Bank 1
  • P1527 Volkswagen — Intake Camshaft Control Circuit Bank 1 Short to Ground
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1527 Code

1. What are the common symptoms of OBDII code P1527?

The common symptoms of OBDII code P1527 include poor acceleration, rough idling, stalling, and the vehicle going into "limp mode."

2. What does the OBDII code P1527 indicate?

OBDII code P1527 indicates that the throttle position sensor has learned closed throttle degrees that are out of the acceptable range set by the vehicle's engine control module.

3. What are the possible causes of OBDII code P1527?

Possible causes of OBDII code P1527 include a faulty throttle position sensor, a dirty throttle body, a vacuum leak, or issues with the wiring or connectors related to the throttle position sensor.

4. How can I diagnose the cause of OBDII code P1527?

Diagnosing OBDII code P1527 usually involves performing a visual inspection of the throttle position sensor and related components, checking for vacuum leaks, and using a scan tool to monitor sensor data and perform a throttle relearn procedure.

5. Can I continue driving my vehicle with OBDII code P1527?

It is not recommended to continue driving your vehicle with OBDII code P1527, as it can lead to poor performance and potential safety issues. It is best to address the underlying cause of the code as soon as possible.

6. How can I repair OBDII code P1527?

Repairing OBDII code P1527 may involve cleaning the throttle body, replacing the throttle position sensor, fixing any vacuum leaks, or repairing any damaged wiring or connectors. Performing a throttle relearn procedure may also be necessary.

7. Does OBDII code P1527 require a trip to the dealership for repair?

While some cases of OBDII code P1527 may require specialized tools or knowledge, many can be addressed by a qualified independent mechanic or DIY enthusiast with the right tools and resources.

8. Can a faulty throttle position sensor cause OBDII code P1527?

Yes, a faulty throttle position sensor is a common cause of OBDII code P1527. The sensor may be sending incorrect signals to the engine control module, causing it to learn closed throttle degrees that are out of range.

9. How long does it typically take to repair OBDII code P1527?

The time it takes to repair OBDII code P1527 can vary depending on the exact cause of the issue and the availability of parts. In general, a straightforward repair may take a few hours to complete.

10. Will resetting the OBDII code P1527 make it go away permanently?

Resetting OBDII code P1527 may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to return. It is important to diagnose and repair the cause of the code to prevent it from coming back.

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