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P1585 Lexus Code - Acceleration Sensor Circuit

Quick Answer

The P1585 diagnostic trouble code (DTC) for Lexus vehicles refers to an issue with the Acceleration Sensor Circuit. Common causes include Faulty acceleration sensor, Damaged wiring or connectors in the acceleration sensor circuit, Corrosion or contamination in the sensor connections. 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 Lexus indicates Acceleration Sensor Circuit.
Common causes
Common causes include Faulty acceleration sensor, Damaged wiring or connectors in the acceleration sensor circuit, Corrosion or contamination in the sensor connections.
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 16, 2024
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Code P1585 Lexus Description

The P1585 diagnostic trouble code (DTC) for Lexus vehicles refers to an issue with the Acceleration Sensor Circuit. This code indicates a problem with the sensor that measures the acceleration of the vehicle. The acceleration sensor is a crucial component of the vehicle's electronic stability control system, as it helps to monitor the acceleration and deceleration of the vehicle. When this sensor malfunctions, it can lead to a variety of performance issues and potentially compromise the safety of the vehicle.

OBDII Code P1585 Lexus - Acceleration Sensor Circuit
P1585 Lexus Code - Acceleration Sensor Circuit

Common Causes of P1585 Lexus

  1. Faulty acceleration sensor.
  2. Damaged wiring or connectors in the acceleration sensor circuit.
  3. Corrosion or contamination in the sensor connections.
  4. Issues with the ECM or other related components.
  5. Impact or damage to the sensor from external factors.

Symptoms of P1585 Lexus

  1. Engine misfires or hesitation during acceleration.
  2. Decreased fuel efficiency.
  3. Illumination of the check engine light on the dashboard.
  4. Rough idling or stalling at low speeds.
  5. Loss of power or sluggish acceleration.

How to Fix P1585 Lexus

  1. Begin by conducting a thorough inspection of the acceleration sensor and its circuitry to identify any visible damage or issues.
  2. Test the sensor's output using a multimeter to determine if it is functioning within the manufacturer's specifications.
  3. Replace the acceleration sensor if it is found to be faulty or malfunctioning.
  4. Check and repair any damaged wiring or connectors in the sensor circuit.
  5. Clear the DTC from the vehicle's ECM using a diagnostic scanner and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1585 Lexus

The cost of repairing the Acceleration Sensor Circuit issue (P1585) in a Lexus vehicle can vary depending on the specific model and year of the vehicle, as well as the location and labor rates of the auto repair shop. On average, the parts for this repair can range from $100 to $300, while the labor costs can range from $150 to $400. Overall, the total repair cost for addressing the P1585 code typically falls between $250 and $700. It is recommended to contact local auto repair shops for more accurate pricing based on individual circumstances.

Need more information about the P1585 Lexus code?

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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 Lexus Code

1. What does the OBDII code P1585 mean on a Lexus?

P1585 indicates an issue with the acceleration sensor circuit, which monitors the position of the accelerator pedal to ensure proper throttle control.

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

Common symptoms include reduced engine performance, hesitation during acceleration, the check engine light illuminating, and potential issues with throttle response.

3. What causes the P1585 code to be triggered?

This code can be caused by a faulty acceleration sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module (ECM).

4. How do I fix the P1585 code on a Lexus?

Repairs may include replacing the acceleration sensor, repairing or replacing damaged wiring or connectors, and, in rare cases, reprogramming or replacing the ECM.

5. Can I drive my Lexus with the P1585 code active?

It is not recommended to drive with this code active, as it can lead to poor throttle response and unsafe driving conditions.

6. How much does it cost to fix the P1585 code on a Lexus?

The repair cost can vary, but replacing the acceleration sensor typically ranges from $150 to $400, including parts and labor.

7. How do I diagnose the P1585 code in a Lexus?

Diagnosing the code involves scanning for additional trouble codes, inspecting the acceleration sensor and its wiring, and testing the sensor's output using a multimeter.

8. Can a dirty throttle body cause the P1585 code in a Lexus?

While a dirty throttle body is not a direct cause, it can contribute to throttle-related issues, so cleaning it may help in conjunction with other repairs.

9. Does the P1585 code always mean the acceleration sensor is bad?

No, the issue could also stem from damaged wiring, loose connectors, or a malfunctioning ECM rather than the sensor itself.

10. How can I prevent the P1585 code from occurring?

Regular maintenance, including inspecting wiring and connectors and ensuring the throttle body and related components are clean, can help prevent this issue.

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