U1165 – SCP (J1850) Invalid or Missing Data for Tuner / Receiver

The ODBII code U1165 SCP (J1850) indicates that there is invalid or missing data being received from the tuner or receiver module in the vehicle’s communication network.

The severity of ODBII code U1165 SCP (J1850) Invalid or Missing Data for Tuner / Receiver is generally considered moderate.

Common Causes For: U1164 SCP (J1850) Invalid or Missing Data for Tuner / Receiver

• Faulty tuner/receiver module
• Poor or damaged wiring/connectors
• Corrupted software or firmware in the tuner/receiver
• Communication issues between the tuner/receiver and the vehicle’s network
• Low battery voltage or power supply issues
• Interference from aftermarket audio equipment
• Faulty or missing ground connections

Common misdiagnosis for U1165 SCP (J1850) Invalid or Missing Data for Tuner / Receiver

• Faulty tuner/receiver
• Wiring issues or damaged connectors
• Faulty or corroded ground connections
• Software or firmware issues in the audio system
• Incorrectly configured audio settings
• Malfunctioning vehicle control modules
• Interference from aftermarket accessories
• Low battery voltage or power supply issues

Common Troubleshooting Steps

When dealing with OBD-II code U1165, which indicates “Invalid or Missing Data for Tuner/Receiver” on the SCP (J1850) communication bus, there are several common troubleshooting steps you can take to diagnose and potentially resolve the issue. Here’s a structured approach:

• Check for Additional Codes: Use an OBD-II scanner to check for any other related trouble codes. Sometimes, multiple codes can provide more context for the issue.
• Inspect Wiring and Connectors: **Visual Inspection: Check the wiring harness and connectors related to the tuner/receiver for any signs of damage, corrosion, or loose connections.
• **Connector Pins: Ensure that the pins in the connectors are not bent or corroded.
• Test the Tuner/Receiver: If possible, test the tuner/receiver unit itself. This may involve swapping it with a known good unit to see if the problem persists.
• Check Power and Ground: Verify that the tuner/receiver is receiving the correct voltage and ground. Use a multimeter to check for proper voltage at the connector.
• Inspect the SCP (J1850) Communication Bus: **Bus Integrity: Check the integrity of the SCP communication bus. Look for shorts, opens, or high resistance in the wiring.
• **Signal Quality: Use an oscilloscope to check the signal quality on the J1850 bus. Look for any irregularities in the waveform.
• Scan Tool Communication: Ensure that the scan tool can communicate with the vehicle’s modules. If there are communication issues with other modules, it may affect the tuner/receiver.
• Check for Software Updates: Check if there are any software updates available for the vehicle’s modules. Sometimes, a software update can resolve communication issues.
• Reset the System: Clear the trouble codes using the OBD-II scanner and see if the code returns after a short drive. This can sometimes reset temporary issues.
• Consult Technical Service Bulletins (TSBs): Look for any TSBs related to the specific make and model of the vehicle. Manufacturers may have issued guidance on common issues related to the tuner/receiver.
• Professional Diagnosis: If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have specialized tools and knowledge to diagnose the problem more effectively.Conclusion Troubleshooting OBD-II code U1165 involves a systematic approach to check for wiring issues, component functionality, and communication integrity. By following these steps, you can narrow down the potential causes and work towards a resolution.