U2335 – Hybrid Powertrain Control Module Communication Error

The ODBII code U2335 indicates a communication error between the Hybrid Powertrain Control Module and other control modules in the vehicle, suggesting a potential issue with data transmission or connectivity within the hybrid system.

The severity of ODBII code U2335 is moderate to severe.

Common Causes For: U2334 U2334: Vehicle Communication Bus Malfunction

• Faulty Hybrid Powertrain Control Module (HPCM)
• Damaged or corroded wiring/connectors
• Communication network issues (CAN bus problems)
• Faulty sensors related to the hybrid system
• Software issues or outdated firmware
• Low battery voltage or power supply issues
• Grounding problems in the electrical system
• Intermittent electrical connections

Common misdiagnosis for U2335 U2335: Hybrid Powertrain Control Module Communication Error

• Faulty Hybrid Powertrain Control Module (HPCM)
• Wiring issues or damaged connectors
• Faulty battery management system
• Communication issues with other control modules
• Low battery voltage or weak hybrid battery
• Corrupted software or firmware in the HPCM
• Faulty sensors related to the hybrid system
• Grounding issues in the electrical system

Common Troubleshooting Steps

The OBD-II code U2335 indicates a communication error with the Hybrid Powertrain Control Module (HPCM). This can be caused by various issues, including wiring problems, module failures, or communication network issues. Here are some common troubleshooting steps to diagnose and resolve the U2335 code:

• Check for Additional Codes: Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide more context and help identify related issues.
• Inspect Wiring and Connectors:
• Visually inspect the wiring harness and connectors associated with the HPCM for any signs of damage, corrosion, or loose connections.
• Pay special attention to the connectors for bent pins or poor contact.
• Check Power and Ground:
• Verify that the HPCM is receiving the correct power supply and ground. Use a multimeter to check voltage at the module’s power and ground pins.
• Ensure that the battery is in good condition and fully charged.
• Test the HPCM:
• If possible, perform a functional test of the HPCM to ensure it is operating correctly. This may require specialized diagnostic equipment or software.
• If the module is suspected to be faulty, consider replacing it or reprogramming it if necessary.
• Inspect the Communication Network:
• Check the CAN (Controller Area Network) bus for proper operation. Use a scan tool to monitor communication between modules.
• Look for any signs of interference or issues with other modules on the network.
• Check for Software Updates:
• Verify if there are any software updates available for the HPCM or other related modules. Sometimes, manufacturers release updates to fix communication issues.
• Clear Codes and Test Drive:
• After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner.
• Take the vehicle for a test drive to see if the code returns. Monitor the system for any abnormal behavior.
• Consult Technical Service Bulletins (TSBs):
• Check for any TSBs related to the U2335 code for your specific vehicle make and model. Manufacturers may have documented known issues and solutions.
• Seek Professional Help:
• If the issue persists after performing these steps, consider seeking assistance from a qualified technician or dealership with experience in hybrid vehicles. By following these troubleshooting steps, you can systematically identify and resolve the underlying cause of the U2335 code.