Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISDATA COMMUNICATION SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2013 Buick Regal Turbo Premium, Standard Trans
Diagnostic Code Index
2013 Buick Regal Turbo Premium, Standard TransSECTION Diagnostic Code Index
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| Control Module U Code List | |
| DTC B1000 | DTC B1000 Electronic Control Unit |
| DTC B1001 | DTC B1001 Option Configuration |
| DTC B101D | DTC B101D Electronic Control Unit Hardware |
| DTC B101E | DTC B101E Electronic Control Unit Software |
| DTC C056D | DTC C056D Electronic Control Unit Hardware |
| DTC C056E | DTC C056E Electronic Control Unit Software |
| DTC P0601-P0604, P0606, or P062F | DTC P0601 Control Module Read Only Memory Performance DTC P0602 Control Module Not Programmed DTC P0603 Control Module Long Term Memory Reset DTC P0604 Control Module Random Access Memory Performance DTC P0606 Control Module Processor Performance DTC P062F Control Module Long Term Memory Performance |
| DTC U0001 | DTC U0001 00 High Speed CAN Communication Bus Malfunction |
| DTC U0020 | DTC U0020 Low Speed CAN Bus |
| DTC U0073 or U2100 | DTC U0073 Control Module Communication Bus A Off DTC U2100 CAN Bus Communication |
| DTC U0074 (Chassis Expansion Bus) | DTC U0074 Control Module Communication Bus B Off |
| DTC U0074 (Powertrain Expansion Bus with HP6) | DTC U0074 00 Control Module Communication Powertrain Expansion CAN Bus Off Malfunction |
| DTC U0074 (Mid Speed GMLAN) | DTC U0074 00 Control Module Communication Bus B Off Malfunction |
| DTC U0074 (Powertrain Expansion Bus without HP6) | DTC U0074 00 Control Module Communication Powertrain Expansion CAN Bus Off Malfunction |
| DTC U0078 | DTC U0078 Control Module Communication Low Speed CAN Bus Off |
| DTC U0100-U02FF (without HP6) | - |
| DTC U0100-U02FF (with HP6) | - |
| DTC U0300-U0336 | - |
| DTC U0400-U05FF | - |
| DTC U1500-U15FF | - |
| DTC U180B | DTC U180B 00 Battery Energy Control Module High Speed CAN Bus Off Malfunction |
| DTC U1811 | DTC U1811 00 Battery Energy Control Module Powertrain Expansion CAN Bus Off Malfunction |
| DTC U1814 | DTC U1814 Powertrain Wake-Up Communication Circuit |
| DTC U1817 | DTC U1817 00 Lost Communication with Hybrid Powertrain Control Module on Powertrain Expansion CAN Bus Malfunction |
| DTC U1818 | DTC U1818 00 Lost Communication with Engine Control Module on Powertrain Expansion CAN Bus Malfunction |
| DTC U182A | DTC U182A 00 Hybrid Powertrain Control Module Lost Communication with Battery Energy Control Module on Powertrain Expansion CAN Bus Malfunction |
| DTC U1831 | DTC U1831 00 Drive Motor Control Module 1 Lost Communication with Hybrid Powertrain Control Module Malfunction |
| DTC U1844 | DTC U1844 00 Battery Energy Control Module Lost Communication with Hybrid Powertrain Control Module on Powertrain Expansion CAN Bus Malfunction |
| DTC U1845 or U1846 | DTC U1845 00 Drive Motor Control Module 1 Lost Communication with Hybrid Powertrain Control Module Malfunction |
| DTC U1847 | DTC U1847 00 Drive Motor Control Module 1 Lost Communication with Battery Energy Control Module on Powertrain Expansion CAN Bus Malfunction |
| DTC U1875 | DTC U1875 00 Drive Motor Control Module 1 Lost Communication with Battery Energy Control Module Malfunction |
| DTC U1876 | DTC U1876 00 Drive Motor Control Module 1 Lost Communication with Engine Control Module Malfunction |
| DTC U1885 | DTC U1885 00 Battery Energy Control Module Lost Communication with Hybrid Powertrain Control Module Malfunction |
| DTC U1886 | DTC U1886 00 Battery Energy Control Module Lost Communication with Engine Control Module Malfunction |
| DTC U18A2 | DTC U18A2 Lost Communication with Fuel Pump Driver Control Module |
| DTC U18B9-U18BF | DTC U18B9 Primary High Speed CAN Bus Subnet Configuration List DTC U18BF Secondary High Speed CAN Bus Subnet Configuration List |
| DTC U1901 | DTC U1901 00 Lost Communication With Front Controls Multifunction Interface Module Malfunction |
| DTC U2099 | DTC U2099 High Speed Communication Enable Circuit |
| DTC U2101 | DTC U2101 CAN Bus Maximum List of Control Modules |
| DTC U2616 | DTC U2616 Fuel Pump Driver Control Module Lost Communication with ECM |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.