U1165 – OBD-II DTC

OBD-II DTC U1165 – SCP (J1850) Invalid or Missing Data for Tuner / Receiver

DTC U1165 meaning

DTC U1165 refers to a diagnostic trouble code that indicates an issue with the communication between the vehicle’s tuner or receiver and the data bus. Specifically, it signifies that there is invalid or missing data being transmitted over the SCP (Standard Corporate Protocol) network, which is based on the J1850 communication standard. This can affect various functions related to audio, navigation, and other electronic systems that rely on this data stream.

DTC U1165 symptoms

Common symptoms associated with DTC U1165 may include:

• Inoperable audio system or tuner
• Navigation system failures or inaccuracies
• Loss of communication with other modules
• Warning lights illuminated on the dashboard
• Erratic behavior of electronic features

DTC U1165 causes

Several factors can lead to the triggering of DTC U1165, including:

• Faulty tuner or receiver unit
• Wiring issues, such as damaged or corroded connectors
• Software glitches in the vehicle’s electronic control unit (ECU)
• Interference from aftermarket electronic devices
• Faulty communication network components

DTC U1165 seriousness

The seriousness of DTC U1165 can vary depending on the vehicle’s reliance on the affected systems. While it may not pose an immediate safety risk, it can lead to significant inconvenience due to the malfunctioning audio or navigation systems. Additionally, unresolved communication issues may affect other electronic systems, potentially leading to more severe problems if not addressed.

How to diagnose DTC U1165

To diagnose DTC U1165, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC U1165.
2. Check for any additional trouble codes that may provide more context.
3. Inspect the wiring and connectors related to the tuner or receiver for damage or corrosion.
4. Verify the operation of the tuner or receiver by testing it with a known good unit if possible.
5. Examine the vehicle’s communication network for any faults or interruptions.
6. Check for software updates or reprogramming needs for the ECU.

How to fix DTC U1165 step-by-step instructions

To fix DTC U1165, follow these steps:

1. Repair or replace any damaged wiring or connectors related to the tuner or receiver.
2. If the tuner or receiver is faulty, replace it with a new or refurbished unit.
3. Clear any software glitches by performing a reset of the vehicle’s ECU.
4. Update the ECU software if an update is available from the manufacturer.
5. Recheck the communication network for proper functionality after repairs.
6. Test the vehicle to ensure that the audio and navigation systems are functioning correctly.

How to erase DTC U1165

To erase DTC U1165, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Access the trouble codes menu on the scanner.
3. Select the option to clear or erase trouble codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and start the vehicle to check if the code reappears.

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