Chevrolet Trax: Data Communications - Diagnostic information and procedures

DIAGNOSTIC CODE INDEX

CONTROL MODULE U CODE LIST

This list includes all Data Communications related U-code DTCs in alphanumeric order with descriptors for all devices. Not all DTCs listed will be applicable to all vehicles.

For symptom byte information, refer to Symptom Byte List .

Control Module U Code List

• DTC B1000: Electronic control unit
• DTC B101D: Electronic control unit hardware
• DTC B101E: Electronic control unit software
• DTC C056D: Electronic control unit hardware
• DTC C056E: Electronic control unit software
• DTC U0020:Low speed can bus
• DTC U0073 OR U2100: Can bus communication
• DTC U0074: Control module communication bus  B OFF
• DTC U0078: Control module communication low speed can bus off
• DTC U0300-U0336: See control module u code list
• DTC U0400-U05FF: See control module U code list
• DTC U1814: Powertrain wake-up communication circuit
• DTC U18A6: Lost communication with right object detection control module on dedicated bus 1
• DTC U18B9-U18BF: High speed can bus subnet configuration list
• DTC U2099: High speed communication enable circuit
• Symptoms - data communications
• Scan tool does not communicate with chassis high speed gmlan device
• Scan tool does not communicate with high speed gmlan device
• Scan tool does not communicate with low speed gmlan device

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