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.
2001 Saturn SW2 AutomaticFACTORY OEM SERVICE PROCEDURE
Body Control Module DTCS
BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1000 | ECU MALFUNCTION |
| DTC B1001 | OPTION CONFIGURATION ERROR |
| DTC B1328 | DEVICE POWER NO. 1 CIRCUIT HIGH |
| DTC B1372 | DEVICE IGNITION NO. 1 CIRCUIT LOW |
| DTC B1382 | DEVICE IGNITION ACCESSORY CIRCUIT LOW |
| DTC B2965 | KEY-IN-IGNITION CIRCUIT OPEN |
| DTC U1000 | CLASS-2 COMMUNICATION DATA LINK MALFUNCTION |
| DTC U1016 | LOST COMMUNICATIONS WITH ENGINE CONTROLS SYSTEM |
| DTC U1040 | LOST COMMUNICATIONS WITH ELECTRONIC BRAKE/TRACTION CONTROL MODULE (EBTCM) |
| DTC U1064 | LOST COMMUNICATIONS WITH BODY CONTROL MODULE |
| DTC U1088 | LOST COMMUNICATIONS WITH SENSING AND DIAGNOSTIC MODULE (SDM) |
| DTC U1096 | LOST COMMUNICATIONS WITH INSTRUMENT PANEL CLUSTER |
| DTC U1300 | CLASS-2 DATA LINK LOW |
| DTC U1301 | CLASS-2 DATA LINK HIGH |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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