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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 398 (COMPUTER/INTEGRATING SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Diagnostic Code Index

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Diagnostic Code Index
WARNING: This page is about a different car, the 2006 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX

DTC Description
DTC B1000  Electronic Control Unit (ECU) Performance
DTC B1001  B1001 Option Configuration Error
DTC B1372  DTC B1372 Device Ignition 1 (Run/Crank) Circuit Low
DTC B1382  DTC B1382 Device Ignition 2 (Acc/Run) Circuit Low
DTC U0073  High Speed CAN Communication Bus
DTC U0100-U0299  DTC U0100 Lost Communication With Engine Control Module (ECM)
DTC U1000  Class 2 Data Link Malfunction
DTC U1001-U1254  Module U1XXX Error
DTC U1300, U1301, or U1305 
  • DTC U1300 Class 2 Data Link Low
  • DTC U1301 Class 2 Data Link High
DTC U2100  Controller Area Network (CAN) Bus Communication
DTC U2102 or U2103 
  • DTC U2102 More Controllers On Bus Than Programmed
  • DTC U2103 Fewer Controllers On Bus Than Programmed
DTC U2104  Controller Area Network (CAN) Bus Reset Counter Overrun
DTC U2105-U2199 
  • DTC U2105 Lost Communication With Engine Control Module (ECM)
  • DTC U2106 Lost Communication With Transmission Control Module (TCM)
  • DTC U2107 Lost Communication With Body Control Module (BCM)
  • DTC U2108 Lost Communication With Electronic Brake Control Module (EBCM)
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When to See a Mechanic

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

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  • • The engine overheats, stalls repeatedly, or misfires under load.
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