P1587 – OBD-II DTC

OBD-II DTC P1587 – Electronic Throttle Monitor Data Available

DTC P1587 meaning

DTC P1587 refers to an issue with the Electronic Throttle Control (ETC) system, specifically indicating that the throttle monitor data is not available. This code is often triggered when the Engine Control Module (ECM) detects a malfunction in the communication between the throttle position sensor and the ECM, or when the throttle body itself is not functioning correctly.

DTC P1587 symptoms

Common symptoms associated with DTC P1587 may include:

• Illumination of the Check Engine Light (CEL)
• Unresponsive or erratic throttle response
• Reduced engine power or limp mode activation
• Stalling or difficulty starting the engine

DTC P1587 causes

Several factors can lead to the triggering of DTC P1587, including:

• Faulty throttle position sensor
• Wiring issues or poor connections in the throttle control circuit
• Defective throttle body assembly
• Software issues within the ECM
• Vacuum leaks affecting the throttle operation

DTC P1587 seriousness

DTC P1587 is considered a serious issue as it can lead to reduced engine performance and safety concerns. The vehicle may enter limp mode, limiting power and speed, which can be dangerous in certain driving conditions. It is advisable to address this code promptly to ensure safe vehicle operation.

How to diagnose DTC P1587

To diagnose DTC P1587, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Check for any additional trouble codes that may provide more context.
3. Inspect the throttle position sensor and its wiring for damage or corrosion.
4. Test the throttle body for proper operation and response.
5. Examine the ECM for any software updates or faults.
6. Perform a visual inspection for vacuum leaks in the intake system.

How to fix DTC P1587 step-by-step instructions

To fix DTC P1587, follow these steps:

1. Clear the DTC using an OBD-II scanner.
2. Inspect and repair any damaged wiring or connectors related to the throttle position sensor.
3. Replace the throttle position sensor if it is found to be faulty.
4. Clean or replace the throttle body if necessary.
5. Check for and repair any vacuum leaks in the intake system.
6. Reprogram or update the ECM if software issues are detected.
7. Test drive the vehicle to ensure the issue is resolved and the DTC does not reappear.

How to erase DTC P1587

To erase DTC P1587, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the option to clear or erase trouble codes on the scanner.
4. Confirm the action to erase the DTC.
5. Disconnect the scanner and start the engine to verify that the code does not return.

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