AutoCodes – Cadillac – P1527 Cadillac

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

Quick Answer

With the engine runtime over 5 seconds, system voltage from 10-16v, Transmission Range Switch does not indicate an illegal position, TFP Manual Valve Position switch does not indicate an illegal position, the Powertrain Control Module (PCM) detects that the TR and TFP switches indicated different gears for 7.8 seconds. Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor harness is open or shorted, Throttle Position 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
P1527 Cadillac indicates Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range.
Common causes
Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor harness is open or shorted, Throttle Position 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.
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Code Popularity 6,812
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 28, 2019
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Code P1527 Cadillac Description

With the engine runtime over 5 seconds, system voltage from 10-16v, Transmission Range Switch does not indicate an illegal position, TFP Manual Valve Position switch does not indicate an illegal position, the Powertrain Control Module (PCM) detects that the TR and TFP switches indicated different gears for 7.8 seconds.
OBDII Code P1527 Cadillac - Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range - AutoCodes.com
P1527 Cadillac Code - Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range

What are the Possible Causes of the DTC P1527 Cadillac?

  • Faulty Throttle Position Sensor
  • Throttle Position Sensor harness is open or shorted
  • Throttle Position Sensor circuit poor electrical connection

How to Fix the DTC P1527 Cadillac?

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 P1527 Cadillac 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.

Need more information about the P1527 Cadillac code?

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Need Help with the Code?

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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.

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