AutoCodes – Isuzu – P1290 Isuzu

P1290 Isuzu Code - Electronic Throttle Control Forced Idle Mode

Quick Answer

P1290 Isuzu indicates Electronic Throttle Control Forced Idle Mode. Common causes include Fualty Throttle Control Motor, Throttle Control Motor harness is open or shorted, Throttle Control Motor 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: P1290 Isuzu indicates Electronic Throttle Control Forced Idle Mode.
Common causes: Common causes include Fualty Throttle Control Motor, Throttle Control Motor harness is open or shorted, Throttle Control Motor 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 25,461

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

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Table of contents Created and updated by William Orellana on Aug 07, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1290 Isuzu Description

OBDII Code P1290 Isuzu - Electronic Throttle Control Forced Idle Mode - AutoCodes.com — P1290 Isuzu Code - Electronic Throttle Control Forced Idle Mode

What does this mean?

What are the Possible Causes of the DTC P1290 Isuzu?

Fualty Throttle Control Motor
Throttle Control Motor harness is open or shorted
Throttle Control Motor circuit poor electrical connection

How to Fix the DTC P1290 Isuzu?

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 P1290 Isuzu 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 P1290 Isuzu 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.

Frequently Asked Questions about P1290 Isuzu Code

1. What does the OBDII code P1290 mean on an Isuzu?

P1290 on an Isuzu indicates an "Electronic Throttle Control Forced Idle Mode," meaning the engine is running in a reduced power mode due to a throttle control issue.

2. What are the common symptoms of code P1290 on an Isuzu?

Common symptoms include reduced engine power, the vehicle stuck at idle speed, an illuminated check engine light, and unresponsive throttle acceleration.

3. What causes the P1290 code to appear on an Isuzu vehicle?

This code can be caused by a malfunctioning throttle body, a faulty throttle position sensor (TPS), damaged wiring or connectors, or issues with the electronic throttle control (ETC) system.

4. Can I drive my Isuzu with a P1290 code?

Driving with a P1290 code is not recommended, as the vehicle may remain in forced idle mode, limiting speed and potentially causing unsafe driving conditions.

5. How can I diagnose the P1290 code on my Isuzu?

Use an OBDII scanner to confirm the code, inspect the throttle body and connectors for damage, and test the throttle position sensor and wiring for continuity or faults.

6. What repairs are typically needed to fix code P1290 on an Isuzu?

Repairs may include cleaning or replacing the throttle body, repairing damaged wiring, replacing the throttle position sensor, or updating the ECM software if necessary.

7. How much does it cost to repair a P1290 code on an Isuzu?

The repair cost varies based on the issue, but throttle body cleaning may cost $100-$200, while replacement or sensor repairs can range from $300-$800, including labor.

8. Can a dirty throttle body trigger the P1290 code?

Yes, a dirty or clogged throttle body can restrict airflow and cause the electronic throttle control system to enter forced idle mode, triggering the P1290 code.

9. Will resetting the ECM clear the P1290 code on my Isuzu?

Resetting the ECM may temporarily clear the code, but the underlying issue needs to be addressed to prevent the code from returning.

10. How can I prevent the P1290 code from occurring again on my Isuzu?

Regularly inspect and clean the throttle body, ensure wiring and connectors are in good condition, and address throttle-related issues promptly to prevent future occurrences.