U1860 GMC Code - Electric A/C Compressor 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
- U1860 GMC indicates Electric A/C Compressor 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 U1860 GMC Description
What are the Possible Causes of the DTC U1860 GMC?
- 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 U1860 GMC?
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 U1860 GMC 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 U1860 GMC Code
1. What are the common symptoms of OBDII code U1860 in a GMC related to the Electric A/C Compressor Control Module?
- Common symptoms include loss of communication with the hybrid/EV powertrain control module 2, issues with the electric A/C compressor, and potentially a malfunctioning air conditioning system.
2. What are the possible causes of OBDII code U1860 in a GMC?
- Possible causes include a faulty electric A/C compressor control module, damaged wiring or connectors, a malfunctioning hybrid/EV powertrain control module 2, or communication network issues.
3. How can I diagnose OBDII code U1860 in a GMC?
- Diagnosis typically involves using a professional OBDII scanner to retrieve the code, checking for any related trouble codes, inspecting the wiring and connectors for damage, and testing the communication between modules.
4. Can I still drive my GMC with OBDII code U1860 present?
- It is not recommended to drive your GMC with this code present, as it can lead to issues with the electric A/C compressor and affect the overall performance of the vehicle's air conditioning system.
5. How can I repair OBDII code U1860 in a GMC?
- Repair options include addressing any wiring or connector issues, replacing the electric A/C compressor control module if faulty, ensuring proper communication between modules, and clearing the trouble code with a diagnostic tool.
6. Is it safe to reset the trouble code U1860 in a GMC without fixing the underlying issue?
- Resetting the trouble code without addressing the underlying issue may temporarily clear the warning light, but the problem will likely reoccur. It is important to diagnose and repair the root cause to prevent further issues.
7. Can a DIY enthusiast fix OBDII code U1860 in a GMC?
- While some aspects of diagnosing and repairing this code may be possible for DIY enthusiasts, it is recommended to consult a professional mechanic with experience in handling complex automotive electrical systems for a thorough diagnosis and repair.
8. How much does it typically cost to repair OBDII code U1860 in a GMC?
- The cost of repairing this code can vary depending on the specific issue, parts needed for replacement, and labor costs. It is advisable to obtain quotes from reputable mechanics or dealerships for an accurate estimate.
9. Will OBDII code U1860 cause my GMC to fail an emissions test?
- The presence of this code may indicate issues with the vehicle's emissions control system, potentially leading to a failed emissions test. It is essential to address and repair the underlying problem to ensure your vehicle meets emission standards.
10. How long can I safely drive my GMC with OBDII code U1860 before getting it repaired?
- It is recommended to address the issue promptly to prevent further damage to the electric A/C compressor and potential issues with the vehicle's air conditioning system. Driving with this code present for an extended period is not advisable.
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