U1164 – OBD-II DTC

OBD-II DTC U1164 – SCP (J1850) Invalid or Missing Data for Tuner / Receiver

DTC U1164 meaning

DTC U1164 refers to a diagnostic trouble code indicating “Invalid or Missing Data for Tuner / Receiver” in vehicles equipped with the SCP (Standard Corporate Protocol) communication system, specifically using the J1850 protocol. This code suggests that the vehicle’s onboard diagnostic system has detected an issue with the data being transmitted or received by the tuner or receiver module, which may affect audio or communication functions within the vehicle.

DTC U1164 symptoms

Common symptoms associated with DTC U1164 may include:

• Inoperable audio system or tuner
• Loss of radio functionality
• Intermittent or complete loss of communication with the receiver
• Warning lights on the dashboard, particularly the check engine light
• Erratic behavior of the audio controls

DTC U1164 causes

Several factors can lead to the triggering of DTC U1164, including:

• Faulty tuner or receiver module
• Wiring issues, such as damaged or corroded connectors
• Software glitches or outdated firmware in the audio system
• Faulty communication lines within the SCP network
• Interference from aftermarket audio equipment

DTC U1164 seriousness

The seriousness of DTC U1164 can vary based on the symptoms experienced. While it may not pose an immediate safety risk, it can lead to a lack of functionality in the vehicle’s audio system, which can be a significant inconvenience. Additionally, unresolved communication issues may affect other systems that rely on the SCP network, potentially leading to further complications.

How to diagnose DTC U1164

To diagnose DTC U1164, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC U1164.
2. Check for any additional trouble codes that may provide more context.
3. Inspect the wiring and connectors related to the tuner/receiver for damage or corrosion.
4. Verify the functionality of the tuner/receiver by testing it with a known good unit if possible.
5. Check for software updates or reprogramming needs for the audio system.
6. Test the SCP communication lines for continuity and proper voltage levels.

How to fix DTC U1164 step-by-step instructions

To fix DTC U1164, follow these step-by-step instructions:

1. Clear the DTC using an OBD-II scanner.
2. Inspect and repair any damaged wiring or connectors related to the tuner/receiver.
3. Replace the tuner or receiver module if it is found to be faulty.
4. Update or reprogram the audio system software if necessary.
5. Reconnect all components and ensure proper installation.
6. Perform a test drive to see if the code reappears.

How to erase DTC U1164

To erase DTC U1164, 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. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to ensure the code does not return.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.