AutoCodes – Suzuki – P1551 Suzuki

P1551 Suzuki Code - Throttle Valve Rest Position Not Reached During Learn

Quick Answer

The Engine Control Module (ECM) controls the throttle valve by applying a varying voltage to the control circuits of the Throttle Actuator Control (TAC) motor. Common causes include Faulty Throttle Body Assembly, Throttle Body harness is open or shorted, Throttle Body 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: P1551 Suzuki indicates Throttle Valve Rest Position Not Reached During Learn.
Common causes: Common causes include Faulty Throttle Body Assembly, Throttle Body harness is open or shorted, Throttle Body 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 2,774

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1551 Suzuki Description

The Engine Control Module (ECM) controls the throttle valve by applying a varying voltage to the control circuits of the Throttle Actuator Control (TAC) motor. The ECM monitors the duty cycle that is required to actuate the throttle valve. The ECM monitors the Throttle Position (TP) sensors 1 and 2 to determine the actual throttle valve position. The Diagnostic Trouble Code (DTC) will set if the ECM detects the TP sensor angle is less than 10 percent or more than 40 percent when the throttle actuator control motor is deactivated.

OBDII Code P1551 Suzuki - Throttle Valve Rest Position Not Reached During Learn - AutoCodes.com — P1551 Suzuki Code - Throttle Valve Rest Position Not Reached During Learn

What does this mean?

What are the Possible Causes of the DTC P1551 Suzuki?

Faulty Throttle Body Assembly
Throttle Body harness is open or shorted
Throttle Body circuit poor electrical connection

How to Fix the DTC P1551 Suzuki?

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 P1551 Suzuki 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 P1551 Suzuki code?

Need more information on how to fix the P1551 Suzuki code? Get Access to Factory Service Manuals

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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 P1551 Suzuki Code

1. What are the common symptoms of OBDII code P1551 in a Suzuki related to the throttle valve rest position?

The common symptoms include poor engine performance, reduced acceleration, and potential stalling or rough idling.

2. What is the primary cause of OBDII code P1551 in Suzuki vehicles?

The primary cause is the throttle valve not reaching the required rest position during the learn procedure, often due to a faulty throttle body or related components.

3. How can I diagnose the issue triggering OBDII code P1551 in my Suzuki?

Diagnosis typically involves inspecting the throttle body, throttle position sensor, wiring connections, and related components for any signs of damage or malfunction.

4. What are some possible repair tips for addressing OBDII code P1551 in a Suzuki?

Repair tips may include cleaning the throttle body, checking and recalibrating the throttle position sensor, ensuring proper wiring connections, and potentially replacing faulty components.

5. Is it safe to continue driving with OBDII code P1551 present in a Suzuki?

It is not recommended to drive with this code active, as it can lead to further engine issues and potential safety hazards. It is advisable to address the problem promptly.

6. Can resetting the OBDII code P1551 in a Suzuki resolve the issue temporarily?

Resetting the code may temporarily clear the error from the system, but if the underlying issue causing the code is not addressed, it is likely to reoccur.

7. Are there any recalls or service bulletins related to OBDII code P1551 in Suzuki vehicles?

It is advisable to check with Suzuki dealerships or online resources to see if there are any recalls or service bulletins related to this specific OBDII code in your vehicle model.

8. How much does it typically cost to repair OBDII code P1551 in a Suzuki?

The cost of repair can vary depending on the specific issue causing the code, the labor rates in your area, and whether any parts need to be replaced. It is recommended to obtain quotes from trusted mechanics.

9. Can a DIY enthusiast with basic automotive skills fix OBDII code P1551 in a Suzuki?

Depending on the exact cause of the code, some DIY enthusiasts may be able to address the issue themselves by following repair guides or tutorials. However, it is crucial to have the necessary tools and knowledge to ensure a proper fix.

10. How often does OBDII code P1551 related to throttle valve rest position occur in Suzuki vehicles?

While the frequency may vary, this code can occur in Suzuki vehicles with throttle body or sensor issues, particularly in models that have been driven extensively or have high mileage. Regular maintenance and inspections can help prevent such issues.