U1162 Code - Lost Communications With Liftgate/Endgate Control Module
Quick Answer
Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Liftgate/Endgate Control Module (LGM/EGM), Liftgate/Endgate Control Module harness is open or shorted, Liftgate/Endgate Control Module circuit poor electrical connection. 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 Liftgate/Endgate Control Module (LGM/EGM), Liftgate/Endgate Control Module harness is open or shorted, Liftgate/Endgate Control Module circuit poor electrical connection.
- 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.
Code U1162 Description
What are the Possible Causes of the DTC U1162?
- Faulty Liftgate/Endgate Control Module (LGM/EGM)
- Liftgate/Endgate Control Module harness is open or shorted
- Liftgate/Endgate Control Module circuit poor electrical connection
How to Fix the DTC U1162?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U1162 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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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.
Discuss the causes and fixes for U1162 OBDII Code
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