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P1607 Toyota Code - Cruise Control Input Processor

Quick Answer

The P1607 diagnostic trouble code (DTC) for Toyota vehicles refers to an issue with the Cruise Control Input Processor. Common causes include Faulty cruise control switch, Defective speed sensor, Malfunctioning throttle position sensor. 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
P1607 Toyota indicates Cruise Control Input Processor.
Common causes
Common causes include Faulty cruise control switch, Defective speed sensor, Malfunctioning throttle position sensor.
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 Sep 10, 2024
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Code P1607 Toyota Description

The P1607 diagnostic trouble code (DTC) for Toyota vehicles refers to an issue with the Cruise Control Input Processor. This code indicates that there is a malfunction in the circuit that processes input signals for the cruise control system. The cruise control system allows the driver to set and maintain a desired speed without needing to keep their foot on the accelerator.

OBDII Code P1607 Toyota - Cruise Control Input Processor
P1607 Toyota Code - Cruise Control Input Processor

Common Causes of P1607 Toyota

  1. Faulty cruise control switch
  2. Defective speed sensor
  3. Malfunctioning throttle position sensor
  4. Wiring issues in the cruise control system
  5. Electronic control module (ECM) failure

Symptoms of P1607 Toyota

  1. Inability to engage or maintain cruise control
  2. Cruise control setting not holding steady speed
  3. Erratic behavior of the cruise control system
  4. Cruise control disengaging unexpectedly
  5. Illumination of the cruise control warning light on the dashboard

How to Fix P1607 Toyota

  1. Begin by diagnosing the issue using a diagnostic scanner to retrieve the specific code and pinpoint the exact cause of the problem.
  2. Inspect all cruise control components, including sensors, switches, and wiring, for any signs of damage or malfunction.
  3. Test the cruise control switch, speed sensor, and throttle position sensor for proper functionality and replace any faulty components.
  4. Check the wiring harness for any breaks, shorts, or loose connections and repair or replace as needed.
  5. Clear the DTC from the ECM and test drive the vehicle to ensure the cruise control system is functioning correctly.

Cost to Fix P1607 Toyota

The typical repair costs for addressing a P1607 code on a Toyota vehicle can range from $150 to $500, depending on the specific cause of the issue and the extent of repairs needed. This estimate includes parts and labor costs. Additionally, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to inquire with local auto repair shops for a more accurate estimate based on your specific circumstances.

What does this mean?

Tech Notes for P1607 Toyota

Check the Engine Control Module (ECM) fuse, if the fuse is OK then try erasing the code first and if the code comes back you may have to reprogram or replace the ECM.

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Information for Specific Toyota Models

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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