P1585 – OBD-II DTC

OBD-II DTC P1585 – Electronic Throttle Monitor PCM Override

DTC P1585 meaning

DTC P1585 refers to an issue with the Electronic Throttle Control (ETC) system, specifically indicating that the Powertrain Control Module (PCM) has overridden the throttle control. This code suggests that the PCM has detected a fault in the throttle system, which may affect engine performance and drivability.

DTC P1585 symptoms

Common symptoms associated with DTC P1585 may include:

• Reduced engine power
• Unresponsive throttle
• Check Engine Light illuminated
• Erratic engine behavior
• Difficulty in accelerating

DTC P1585 causes

Several factors can lead to the triggering of DTC P1585, including:

• Faulty throttle position sensor (TPS)
• Wiring issues or poor connections in the throttle control circuit
• Malfunctioning accelerator pedal position sensor
• Defective PCM
• Vacuum leaks affecting the throttle body

DTC P1585 seriousness

DTC P1585 is considered a serious issue as it can lead to reduced engine performance and potential safety risks while driving. The vehicle may enter a limp mode, limiting power and speed, which can be dangerous in certain driving conditions.

How to diagnose DTC P1585

To diagnose DTC P1585, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the throttle position sensor and accelerator pedal position sensor for proper operation.
3. Check for any wiring issues or loose connections in the throttle control circuit.
4. Examine the throttle body for any obstructions or damage.
5. Clear the DTC and perform a test drive to see if the code reappears.

How to fix DTC P1585 step-by-step instructions

To fix DTC P1585, follow these steps:

1. Inspect and repair any damaged wiring or connectors in the throttle control circuit.
2. Replace the throttle position sensor if it is found to be faulty.
3. Check and replace the accelerator pedal position sensor if necessary.
4. Clean or replace the throttle body if it is obstructed or damaged.
5. Reprogram or replace the PCM if it is determined to be defective.

How to erase DTC P1585

To erase DTC P1585, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Access the trouble codes menu on the scanner.
3. Select the option to clear or erase the codes.
4. Turn off the ignition and disconnect the scanner.
5. Start the vehicle and monitor for any reoccurrence of the DTC.

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