U1162 Code - Lost Communications With Liftgate/Endgate Control Module
Quick Answer
The diagnostic trouble code U1162 indicates that the vehicle has lost communication with the liftgate or endgate control module. Common causes include Faulty wiring or connectors between the control module and the vehicle's main computer, Malfunctioning liftgate or endgate control module, Corrosion or damage to the sensors that communicate with the control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U1162 indicates Lost Communications With Liftgate/Endgate Control Module.
- Common causes
- Common causes include Faulty wiring or connectors between the control module and the vehicle's main computer, Malfunctioning liftgate or endgate control module, Corrosion or damage to the sensors that communicate with the control module.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code U1162 Description
The diagnostic trouble code U1162 indicates that the vehicle has lost communication with the liftgate or endgate control module. This module is responsible for controlling the operation of the liftgate or endgate on the vehicle, which could be a rear hatch, tailgate, or any other type of movable door at the back of the vehicle. When communication with this module is lost, it can lead to issues with opening or closing the liftgate or endgate, as well as potentially impacting other systems that rely on information from this module.
Common Causes of U1162
- Faulty wiring or connectors between the control module and the vehicle's main computer.
- Malfunctioning liftgate or endgate control module.
- Corrosion or damage to the sensors that communicate with the control module.
- Electrical issues within the vehicle's system affecting communication with the module.
Symptoms of U1162
- Inability to open or close the liftgate or endgate.
- Warning lights related to the liftgate or endgate system appearing on the dashboard.
- Unusual noises coming from the liftgate or endgate mechanism.
- Issues with the vehicle's security system or lighting controls.
How to Fix U1162
- Begin by conducting a thorough diagnostic scan to confirm the U1162 code and identify the specific issue causing the communication loss.
- Inspect the wiring and connectors between the control module and the vehicle's main computer for any damage or corrosion. Repair or replace as necessary.
- Test the liftgate or endgate control module for proper functionality and replace if found to be faulty.
- Check the sensors that communicate with the control module and ensure they are functioning correctly.
- Clear the trouble code from the vehicle's computer system and test the liftgate or endgate operation to confirm the issue has been resolved.
Cost to Fix U1162
The typical repair costs for addressing a lost communication issue with the liftgate or endgate control module can vary depending on the specific cause of the problem. On average, parts for this repair could range from $200 to $500, with labor costs adding an additional $100 to $300. The total cost could therefore fall between $300 and $800. It is important to note that these estimates are rough averages and actual costs may vary based on the vehicle make and model, the location of the repair shop, and the extent of the repairs needed. It is advisable to obtain quotes from local auto repair shops to get a more accurate estimate for your specific situation.
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Code U1162 Information for Specific Makes
- U1162 Buick — Lost Communications With Liftgate/Endgate Control Module
- U1162 Cadillac — Lost Communications With Liftgate/Endgate Control Module
- U1162 Chevrolet — Lost Communications With Liftgate/Endgate Control Module
- U1162 GMC — Lost Communications With Liftgate/Endgate Control Module
Frequently Asked Questions about U1162 Code
What does OBDII code U1162 mean?
U1162 indicates a loss of communication between the vehicle's main control modules and the Liftgate/Endgate Control Module.
What are the common symptoms of code U1162?
Symptoms may include a liftgate that won’t open or close, intermittent or no response from liftgate controls, and warning lights or error messages on the dashboard.
What causes code U1162 to appear?
Common causes include wiring issues, faulty connections, a failed Liftgate/Endgate Control Module, or software glitches in the vehicle’s communication network.
Can a weak battery cause code U1162?
Yes, a weak or failing battery can cause communication errors like U1162, as insufficient voltage may disrupt module operation.
How do I diagnose code U1162?
Start by inspecting the wiring and connectors related to the Liftgate/Endgate Control Module. Use a diagnostic scanner to confirm the code and check for other related codes.
Can I clear code U1162 by resetting the vehicle?
While resetting might temporarily clear the code, the underlying issue must be addressed to prevent it from reappearing.
How much does it cost to fix code U1162?
Repairs can vary widely, from $50 for a simple wiring fix to $500 or more if the Liftgate/Endgate Control Module needs replacement.
Is it safe to drive with code U1162?
Yes, but the liftgate may not function properly, which could be inconvenient if you need to access the cargo area.
Can software updates fix code U1162?
In some cases, a software update for the vehicle's control modules may resolve communication issues like U1162.
How can I prevent code U1162 from occurring?
Regular maintenance, including checking wiring and connectors for damage, and ensuring the battery is in good condition, can help prevent this code.
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