Engine-CodesToyota – P1585 Toyota

P1585 Toyota Code - Acceleration Sensor Circuit

Quick Answer

The P1585 code for Toyota vehicles indicates a problem with the acceleration sensor circuit. Common causes include Faulty acceleration sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to sensor components. 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
P1585 Toyota indicates Acceleration Sensor Circuit.
Common causes
Common causes include Faulty acceleration sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to sensor components.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P1585 Toyota Description

The P1585 code for Toyota vehicles indicates a problem with the acceleration sensor circuit. This sensor is responsible for measuring the rate of acceleration of the vehicle, providing crucial data to the engine control module for proper fuel delivery and performance. When this circuit malfunctions, it can lead to issues with acceleration, fuel efficiency, and overall engine performance. If left unaddressed, it can potentially cause further damage to the engine or other related systems.

OBDII Code P1585 Toyota - Acceleration Sensor Circuit
P1585 Toyota Code - Acceleration Sensor Circuit

Common Causes of P1585 Toyota

  1. Faulty acceleration sensor
  2. Wiring or connector issues in the sensor circuit
  3. Corrosion or damage to sensor components
  4. Issues with the engine control module (ECM)
  5. Electrical interference or shorts in the circuit

Symptoms of P1585 Toyota

  1. Loss of power or sluggish acceleration
  2. Engine stalling or hesitation during acceleration
  3. Decreased fuel efficiency
  4. Illumination of the Check Engine Light
  5. Rough idle or erratic engine behavior

How to Fix P1585 Toyota

  1. Begin by conducting a thorough inspection of the acceleration sensor and its wiring for any visible damage or corrosion.
  2. Test the sensor using a multimeter to check for proper voltage and resistance readings.
  3. Replace the acceleration sensor if it is found to be faulty.
  4. Repair any damaged wiring or connectors in the circuit.
  5. Clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1585 Toyota

The cost of repairing the acceleration sensor circuit can vary depending on the specific issue and the labor rates in your area. On average, you can expect to pay anywhere from $150 to $400 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's recommended to obtain quotes from multiple sources to get an accurate estimate for your particular situation.

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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 P1585 Toyota Code

1. What does the OBDII code P1585 on a Toyota indicate?

- The P1585 code on a Toyota indicates a malfunction in the acceleration sensor circuit, suggesting an issue with the sensor responsible for detecting the vehicle's acceleration rate.

2. What are common symptoms of the P1585 code in a Toyota?

- Common symptoms include the check engine light turning on, reduced engine performance, poor acceleration, and, in some cases, the vehicle entering a limp mode to prevent further damage.

3. What can cause the P1585 code to appear on a Toyota?

- Causes of the P1585 code can include a faulty acceleration sensor, damaged wiring or connectors in the sensor circuit, or issues with the vehicle’s Engine Control Module (ECM).

4. How can I troubleshoot the P1585 code in my Toyota?

- Troubleshooting should start with scanning the vehicle with an OBDII scanner, checking for any additional codes, inspecting the acceleration sensor and its connections for damage or corrosion, and testing the sensor's output with a multimeter.

5. Is it safe to drive a Toyota with the P1585 code?

- While it might be possible to drive a vehicle with the P1585 code, doing so is not recommended as it can lead to decreased performance and potentially cause further damage to the vehicle's engine or electronic systems.

6. What steps are involved in repairing the P1585 code on a Toyota?

- Repairing the P1585 code typically involves inspecting and testing the acceleration sensor and its circuitry, replacing any faulty components, and clearing the code from the ECM to verify the repair.

7. How much does it typically cost to fix the P1585 code in a Toyota?

- The cost to fix the P1585 code can vary based on the extent of the issue and the labor rates in your area, but typically it ranges from $150 to $300 for parts like a new acceleration sensor and labor.

8. Can a faulty acceleration sensor affect the fuel economy of a Toyota?

- Yes, a faulty acceleration sensor can affect the fuel economy of a Toyota by causing the engine to misinterpret acceleration inputs, leading to inefficient fuel use and reduced overall performance.

9. Are there specific Toyota models more prone to the P1585 code?

- The P1585 code can appear on any Toyota model equipped with an acceleration sensor, but it is more commonly reported in models with higher electronic system complexities, such as hybrid or high-performance vehicles.

10. What tools are necessary to diagnose the P1585 code on a Toyota?

- Diagnosing the P1585 code typically requires an OBDII scanner, a digital multimeter for testing sensor outputs and circuit continuity, and basic hand tools to access the sensor and associated wiring.

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