P1573 – OBD-II DTC

OBD-II DTC P1573 – Speed Control Command Switch Out of Range Low

DTC P1573 meaning

DTC P1573 refers to a diagnostic trouble code indicating that the speed control command switch is out of range low. This code is associated with the vehicle’s cruise control system, which relies on input from the speed control command switch to function properly. When the signal from this switch is lower than expected, the vehicle’s onboard diagnostic system triggers this code to alert the technician of a potential issue.

DTC P1573 symptoms

Common symptoms associated with DTC P1573 may include:

• Inability to engage cruise control
• Erratic or non-responsive cruise control operation
• Illumination of the check engine light
• Potential loss of speed control functionality

DTC P1573 causes

Several factors can lead to the triggering of DTC P1573, including:

• Faulty speed control command switch
• Wiring issues, such as shorts or open circuits
• Corroded or loose electrical connections
• Malfunctioning cruise control module
• Software issues within the vehicle’s control system

DTC P1573 seriousness

The seriousness of DTC P1573 can vary based on the vehicle’s condition and the driver’s reliance on cruise control. While it may not pose an immediate safety risk, it can lead to driver fatigue on long trips and may affect overall vehicle performance. It is advisable to address this issue promptly to ensure safe and reliable operation of the vehicle.

How to diagnose DTC P1573

To diagnose DTC P1573, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the P1573 code.
2. Inspect the speed control command switch for physical damage or wear.
3. Check the wiring and connectors for signs of corrosion or loose connections.
4. Test the speed control command switch using a multimeter to ensure it operates within the specified range.
5. Examine the cruise control module for any faults or software issues.
6. Clear the code and perform a road test to see if the code reappears.

How to fix DTC P1573 step-by-step instructions

To fix DTC P1573, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Inspect and replace the speed control command switch if it is found to be faulty.
3. Repair or replace any damaged wiring or connectors associated with the speed control system.
4. Reconnect the battery and clear the DTC using an OBD-II scanner.
5. Perform a road test to verify that the cruise control system is functioning correctly and that the P1573 code does not return.

How to erase DTC P1573

To erase DTC P1573, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s 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 vehicle to ensure the code does not reappear.

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