U2602 Cadillac Code - Battery Energy Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2
Quick Answer
Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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
- U2602 Cadillac indicates Battery Energy Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2.
- Common causes
- Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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 U2602 Cadillac Description
This diagnostic is used to check the loss of communication with the Hybrid/EV Powertrain Control Module 2 on a high-speed General Motors Local Area Network (GMLAN) bus. The Battery Energy Control Module supervises a periodic serial data message to check the communication status of the Hybrid/EV Powertrain Control Module 2. If this message is not received within 400 ms, the Battery Energy Control Module increases its fail count. When this fail count is over X Cal Value (7) during Y Cal Value (10 samples), the diagnostic status of this code is set to Failed and transmitted over high voltage energy high-speed GMLAN bus to the Hybrid/EV Powertrain Control Module 2.
The Diagnostic Trouble Code (DTC) will set when a supervised periodic message that includes the transmitter device availability has not been received within 400 ms.
What are the Possible Causes of the DTC U2602 Cadillac?
- Faulty Hybrid/EV Powertrain Control Module 2
- Hybrid/EV Powertrain Control Module 2 harness is open or shorted
- Hybrid/EV Powertrain Control Module 2 circuit poor electrical connection
How to Fix the DTC U2602 Cadillac?
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 U2602 Cadillac 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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Frequently Asked Questions about U2602 Cadillac Code
1. What are common symptoms of OBDII code U2602 on a Cadillac related to the Battery Energy Control Module?
- Common symptoms may include loss of power, decreased fuel efficiency, and issues with hybrid or electric powertrain functionality.
2. What can cause the U2602 code to trigger on a Cadillac?
- This code is typically triggered when there is a communication error between the Battery Energy Control Module and the Hybrid/EV Powertrain Control Module 2.
3. How serious is the U2602 OBDII code on a Cadillac?
- The U2602 code should be addressed promptly as it can affect the performance and efficiency of the hybrid or electric powertrain system.
4. How can I diagnose the U2602 code on my Cadillac?
- Diagnosing this code often involves using a professional OBDII scanner to retrieve the specific fault codes and investigating the communication between the modules.
5. Can I still drive my Cadillac with the U2602 code present?
- It is not recommended to drive your Cadillac with the U2602 code active, as it can lead to further damage and potential safety concerns.
6. What are some repair tips for fixing the U2602 code on a Cadillac?
- Repair tips may include checking and repairing wiring connections, ensuring proper module communication, and resetting the fault codes after addressing any issues.
7. How much does it cost to repair the U2602 code on a Cadillac?
- Repair costs can vary depending on the underlying issue causing the code, but it is advisable to consult a professional mechanic for an accurate diagnosis and cost estimate.
8. Can I reset the U2602 code on my Cadillac myself?
- While you can attempt to reset the code using an OBDII scanner, it is crucial to address the root cause of the issue to prevent the code from reoccurring.
9. Are there any recalls or technical service bulletins related to the U2602 code in Cadillacs?
- Checking with your local Cadillac dealership or online resources can help determine if there are any relevant recalls or technical service bulletins for this specific code.
10. How can I prevent the U2602 code from appearing on my Cadillac in the future?
- Regular maintenance, keeping the hybrid or electric powertrain system in good condition, and addressing any warning signs promptly can help prevent the U2602 code from reappearing.
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