AutoCodes – Generic – P1559

P1559 Code - Idle Speed Control Throttle Position Adaption Malfunction

Quick Answer

P1559 indicates Idle Speed Control Throttle Position Adaption Malfunction. Common causes include Faulty Throttle Valve Control Module, Throttle Valve Control Module harness is open or shorted, Throttle Valve Control Module circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P1559 indicates Idle Speed Control Throttle Position Adaption Malfunction.
Common causes: Common causes include Faulty Throttle Valve Control Module, Throttle Valve Control Module harness is open or shorted, Throttle Valve Control Module circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 21,363

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 30, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1559 Description

OBDII Code P1559 - Idle Speed Control Throttle Position Adaption Malfunction - AutoCodes.com — P1559 Code - Idle Speed Control Throttle Position Adaption Malfunction

What does this mean?

What are the Possible Causes of the DTC P1559?

Faulty Throttle Valve Control Module
Throttle Valve Control Module harness is open or shorted
Throttle Valve Control Module circuit poor electrical connection

How to Fix the DTC P1559?

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 P1559 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 P1559 code?

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Need Help with the Code?

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Information for Specific Makes

P1559 Audi — Idle Speed Control Throttle Position Adaption Malfunction
P1559 Buick — Cruise Control Power Management Mode
P1559 Cadillac — Cruise Control Power Management Mode
P1559 Chevrolet — Cruise Control Power Management Mode
P1559 GMC — Cruise Control Power Management Mode
P1559 Volkswagen — Idle Speed Control Throttle Position Adaption Malfunction

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.