C1948 – OBD-II DTC

OBD-II DTC C1948 – Seat Track Position Switch Circuit Resistance Out of Range

DTC C1948 meaning

DTC C1948 refers to a diagnostic trouble code indicating that the resistance in the seat track position switch circuit is out of the expected range. This code is typically associated with the vehicle’s seat adjustment system, which may include power seat functions. The seat track position switch is responsible for detecting the position of the seat and sending this information to the vehicle’s control module.

DTC C1948 symptoms

Common symptoms associated with DTC C1948 may include:

• Inability to adjust the seat position
• Seat position not registering correctly on the dashboard
• Warning lights illuminated on the dashboard
• Intermittent or complete loss of power seat functionality

DTC C1948 causes

Several factors can lead to the occurrence of DTC C1948, including:

• Faulty seat track position switch
• Wiring issues, such as frayed or damaged wires
• Corrosion or poor connections in the circuit
• Faulty control module or software issues
• Improper installation of the seat or related components

DTC C1948 seriousness

The seriousness of DTC C1948 can vary. While it may not pose an immediate safety risk, it can lead to discomfort due to an inability to adjust the seat properly. Additionally, if left unaddressed, it may indicate underlying electrical issues that could affect other systems in the vehicle.

How to diagnose DTC C1948

To diagnose DTC C1948, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the seat track position switch for visible damage or wear.
3. Check the wiring and connectors for signs of corrosion or damage.
4. Test the resistance of the seat track position switch using a multimeter.
5. Consult the vehicle’s service manual for specific resistance values.
6. Examine the control module for any software updates or faults.

How to fix DTC C1948 step-by-step instructions

To fix DTC C1948, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety.
2. Remove the seat from the vehicle if necessary to access the switch.
3. Inspect and replace the seat track position switch if faulty.
4. Repair or replace any damaged wiring or connectors.
5. Reconnect the seat and ensure all components are securely fastened.
6. Reconnect the battery and clear the DTC using an OBD-II scanner.
7. Test the seat adjustment functionality to ensure proper operation.

How to erase DTC C1948

To erase DTC C1948, 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 trouble codes section on the scanner.
4. Select the option to clear or erase the codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to verify that the code does not reappear.

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