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Engine-Codes – Scion – P1585 Scion

P1585 Scion Code - Acceleration Sensor Circuit

Quick Answer

The P1585 Scion code refers to an issue with the acceleration sensor circuit in the vehicle. Common causes include Faulty acceleration sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction. 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 Scion indicates Acceleration Sensor Circuit.
Common causes
Common causes include Faulty acceleration sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction.
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 P1585 Scion Description

The P1585 Scion code refers to an issue with the acceleration sensor circuit in the vehicle. The acceleration sensor is a crucial component that measures the rate of change of the vehicle's speed, allowing the engine control module (ECM) to adjust fuel delivery and ignition timing for optimal performance. When this sensor circuit malfunctions, it can lead to a range of performance issues and potentially compromise the safety and efficiency of the vehicle.

OBDII Code P1585 Scion - Acceleration Sensor Circuit
P1585 Scion Code - Acceleration Sensor Circuit

Common Causes of P1585 Scion

  1. Faulty acceleration sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM malfunction
  4. Corrosion or water damage in the sensor circuit
  5. Electrical issues such as short circuits or open circuits

Symptoms of P1585 Scion

  1. Decreased fuel efficiency
  2. Rough idling
  3. Hesitation or surging during acceleration
  4. Stalling
  5. Vehicle going into failsafe mode

How to Fix P1585 Scion

  1. Use a diagnostic scanner to retrieve the trouble code and confirm the issue with the acceleration sensor circuit.
  2. Inspect the wiring and connectors in the sensor circuit for any damage or corrosion. Repair or replace as necessary.
  3. Test the acceleration sensor for proper operation and replace if found to be faulty.
  4. Clear the trouble code from the ECM's memory and road test the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be needed to identify any underlying ECM issues or other potential causes.

Cost to Fix P1585 Scion

The cost of repairing a P1585 Scion code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the repair costs for this type of problem can range from $200 to $500, including parts and labor. It's important to note that rates can vary widely based on location, vehicle make and model, and the severity of the issue. It's recommended to consult with a certified mechanic for a more accurate estimate based on your specific circumstances.

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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 Scion Code

1. What does the OBDII code P1585 mean in a Scion?

The P1585 code indicates an issue with the Acceleration Sensor Circuit in the vehicle, which monitors acceleration and deceleration for proper engine and transmission performance.

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

Symptoms may include poor acceleration, reduced engine performance, the check engine light turning on, and possibly erratic shifting in some models.

3. What causes the P1585 code to appear in a Scion?

Common causes include a faulty acceleration sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module (ECM).

4. Can I drive my Scion with the P1585 code?

It may be possible to drive the vehicle, but doing so can lead to poor performance and potentially cause further damage. It’s best to address the issue promptly.

5. How is the P1585 code diagnosed in a Scion?

A mechanic will use an OBDII scanner to confirm the code, inspect the acceleration sensor and its wiring, and test the sensor’s output voltage against manufacturer specifications.

6. How do I fix the P1585 code in my Scion?

Repairs may include replacing the faulty acceleration sensor, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.

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

Repair costs vary depending on the issue, but replacing an acceleration sensor typically costs between $100 and $300, including parts and labor.

8. Can a dirty acceleration sensor cause the P1585 code?

While rare, a dirty sensor could potentially interfere with its readings. Cleaning it might help, but if the sensor is damaged, it will need to be replaced.

9. Does the P1585 code require ECM replacement in a Scion?

ECM replacement is usually a last resort and is only necessary if the ECM itself is diagnosed as faulty after ruling out sensor and wiring issues.

10. How can I prevent the P1585 code from recurring in my Scion?

Regular maintenance, including inspecting and replacing damaged wiring or sensors as needed, can help prevent the code from recurring.

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