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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 593 (DATA COMMUNICATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC U2105-U2199DTC DESCRIPTORS
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

DTC Descriptors

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION DTC Descriptors
WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic procedure supports the following DTCs:

  • DTC U2105 Lost Communications With Engine Control System
  • DTC U2106 Lost Communications With Transmission Control System
  • DTC U2107 Lost Communications With Body Control System
  • DTC U2108 Lost Communications With ABS/TCS Control System
  • DTC U2109 Lost Communications With Powertrain Multiple Control System
  • DTC U2111 Lost Communications With Steering Control System
  • DTC U2113 Lost Communications With Sensing Diagnostic Module (SDM)
  • DTC U2116 Lost Communications With Instrument Panel Cluster (IPC)
  • DTC U2122 Lost Communications With Radio
  • DTC U2125 Lost Communication With Mobile Communications Control Systems
  • DTC U2127 Lost Communications With Front HVAC
  • DTC U2137 Lost Communications With Vehicle Theft Deterrent (VTD)
  • DTC U2171 Lost Communications With DVD Player
  • DTC U2172 Lost Communications With Digital Radio Receiver

When more than one Loss of Communication DTC is set in either one module or in several modules, diagnose the DTCs in the following order:

  1. Current DTCs before history DTCs unless told otherwise in the diagnostic table.
  2. The DTC which is reported the most times.

This vehicle has DTCs which include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description .

DTC U2105-U2199

DTC Symptom DTC Symptom Descriptor
00 No Additional Information
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.