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.
2004 Cadillac CTS VFACTORY OEM SERVICE PROCEDURE
Engine Electrical DTCS
ENGINE ELECTRICAL DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1327 | Device Power Circuit Low |
| DTC B1328 | Device Power Circuit High |
| DTC B1513 | Charging System Volts Low |
| DTC B1514 | Charging System Volts High |
| DTC P0560 | System Voltage |
| DTC P0562 | System Voltage Low |
| DTC P0563 | System Voltage High |
| DTC P0615 | Starter Relay Control Circuit |
| DTC P0616 | Starter Relay Control Circuit Low Voltage |
| DTC P0617 | Starter Relay Control Circuit High Voltage |
| DTC P0622 | Generator F-Terminal Circuit |
| DTC P0625 | Generator F-Terminal Circuit Low Voltage |
| DTC P0626 | Generator F-Terminal Circuit High Voltage |
| DTC P1637 | Generator L-Terminal Circuit |
| DTC P1668 | Generator L-Terminal Control Circuit |
| DTC P2500 | Generator L-Terminal Circuit Low Voltage |
| DTC P2501 | Generator L-Terminal Circuit High Voltage |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.