U1058 – OBD-II DTC

OBD-II DTC U1058 – SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL

DTC U1058 meaning

DTC U1058 refers to a diagnostic trouble code that indicates an issue with the communication between the vehicle’s control modules, specifically related to the transmission or transaxle. The code signifies that there is invalid or missing data being transmitted over the SCP (Serial Communication Protocol) using the J1850 communication standard. This can affect the operation of the transmission and the PRNDL (Park, Reverse, Neutral, Drive, Low) indicator.

DTC U1058 symptoms

Common symptoms associated with DTC U1058 may include:

• Transmission shifting issues
• Inability to shift into certain gears
• PRNDL indicator not functioning correctly
• Check Engine Light illuminated
• Erratic or unexpected vehicle behavior

DTC U1058 causes

Several factors can lead to the triggering of DTC U1058, including:

• Faulty transmission control module (TCM)
• Wiring issues or damaged connectors in the transmission circuit
• Faulty sensors related to the transmission
• Software glitches in the vehicle’s control modules
• Corrosion or poor connections in the SCP network

DTC U1058 seriousness

DTC U1058 can be considered a serious issue as it directly impacts the vehicle’s transmission functionality. If left unaddressed, it may lead to:

• Increased risk of transmission failure
• Unsafe driving conditions due to unpredictable shifting
• Potential damage to other vehicle systems

How to diagnose DTC U1058

To diagnose DTC U1058, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the U1058 code.
2. Check for any additional trouble codes that may provide more context.
3. Inspect the wiring and connectors related to the transmission control module for damage or corrosion.
4. Test the transmission control module for proper operation.
5. Examine the vehicle’s SCP network for any communication issues.
6. Check the functionality of related sensors and components.

How to fix DTC U1058 step-by-step instructions

To fix DTC U1058, follow these steps:

1. Repair or replace any damaged wiring or connectors found during diagnosis.
2. If the transmission control module is faulty, replace it with a new or refurbished unit.
3. Update the software of the control modules if necessary.
4. Ensure all sensors related to the transmission are functioning correctly and replace any that are faulty.
5. Clear the DTC using an OBD-II scanner and test drive the vehicle to ensure the issue is resolved.

How to erase DTC U1058

To erase DTC U1058, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position without starting the engine.
3. Access the trouble codes menu on the scanner.
4. Select the option to clear or erase trouble codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to check if the code reappears.

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