U1814 Chevrolet Code - Powertrain Wake-Up Communication Circuit
Quick Answer
The Body Control Module (BCM) activates the ignition circuit, when the ignition key is in ACC, ON or START. Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body 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
- U1814 Chevrolet indicates Powertrain Wake-Up Communication Circuit.
- Common causes
- Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body 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 U1814 Chevrolet Description
What are the Possible Causes of the DTC U1814 Chevrolet?
- Faulty Body Control Module (BCM)
- Body Control Module harness is open or shorted
- Body Control Module circuit poor electrical connection
How to Fix the DTC U1814 Chevrolet?
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 U1814 Chevrolet 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 Chevrolet Models
- U1814 2014 Chevrolet Silverado — Powertrain Wake-Up Communication Circuit
- U1814 2015 Chevrolet Silverado — Powertrain Wake-Up Communication Circuit
- U1814 2016 Chevrolet Silverado — Powertrain Wake-Up Communication Circuit
- U1814 2017 Chevrolet Silverado — Powertrain Wake-Up Communication Circuit
- U1814 2018 Chevrolet Silverado — Powertrain Wake-Up Communication Circuit
Frequently Asked Questions about U1814 Chevrolet Code
1. What are common symptoms of OBDII code U1814 in a Chevrolet vehicle?
The common symptoms of code U1814 include intermittent or complete loss of communication with the powertrain control module (PCM), resulting in issues like stalling, rough idling, or difficulty starting the engine.
2. What can cause the OBDII code U1814 to appear in a Chevrolet vehicle?
The U1814 code typically indicates a fault in the Powertrain Wake-Up Communication Circuit, which can be caused by damaged wiring, loose connections, or a malfunctioning module within the communication network.
3. How can I diagnose the OBDII code U1814 in my Chevrolet?
Diagnosing code U1814 involves inspecting the wiring harness for any visible damage, checking the connections to ensure they are secure, and using a diagnostic scanner to communicate with the PCM and other modules on the network.
4. What are some repair tips for fixing the U1814 trouble code in a Chevrolet?
Repairing code U1814 may involve repairing or replacing damaged wiring, ensuring all connections are tight and secure, resetting the PCM, and retesting the system to ensure the code does not return.
5. Can a DIY enthusiast fix the OBDII code U1814 in a Chevrolet?
While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing code U1814 may require advanced diagnostic tools and technical knowledge, making it advisable to seek professional help for a proper fix.
6. Is it safe to drive with the OBDII code U1814 present in a Chevrolet?
Driving with code U1814 present can potentially lead to performance issues or unexpected stalling, so it is recommended to address the underlying problem promptly to prevent any safety concerns on the road.
7. How much does it cost to repair the OBDII code U1814 in a Chevrolet at a dealership?
The cost of repairing code U1814 can vary depending on the extent of the issue, labor rates at the dealership, and any parts that may need replacement, so it's advisable to consult with the dealership for an accurate estimate.
8. Can a faulty battery or alternator cause the OBDII code U1814 to trigger in a Chevrolet?
A faulty battery or alternator can potentially affect the power supply to the communication network, leading to issues like code U1814, so it's important to ensure the electrical system is in good condition when diagnosing this code.
9. Will resetting the trouble codes with a scanner clear the OBDII code U1814 in a Chevrolet?
Resetting the trouble codes may temporarily clear the U1814 code, but if the underlying issue in the Powertrain Wake-Up Communication Circuit is not addressed, the code is likely to return after driving cycles.
10. Can extreme weather conditions affect the occurrence of the OBDII code U1814 in a Chevrolet?
Extreme weather conditions can potentially impact the electrical connections and components in the communication network, leading to intermittent faults like code U1814, especially if there are existing vulnerabilities in the system.
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