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 Saturn Ion Red LineFACTORY OEM SERVICE PROCEDURE
Body Control Module DTCS
BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B0285 | Electric Rear Defrost Circuit Low |
| DTC B1000 | ECU Malfunction |
| DTC B1001 | Option Configuration Error |
| DTC B1004 | Keep Alive Memory (KAM) Reset |
| DTC B1009 | EEPROM Checksum Mismatch |
| DTC B1372, B1373, or B1374 | Device Ignition 1 Circuit |
| DTC B1382, B1383, or B1384 | Device Ignition ACCESSORY Circuit |
| DTC B1441, B1442, or B1443 | Device Ignition OFF, RUN, and CRANK Circuit |
| DTC B2558 | Passenger Compartment Lamp Control Circuit High |
| DTC B2613 | Passenger Compartment Dimming 1 Circuit High |
| DTC B2627 | Display Dimming Pulse Width Modulation (PWM) Output Circuit Low |
| DTC B2647 | Ambient Light Sensor Circuit Low |
| DTC B2648 | Ambient Light Sensor Circuit High |
| DTC B2707 | Gearshift Unlock Circuit Low |
| DTC B2709 | Gearshift Unlock Circuit Open |
| DTC B2957 | Security System Sensor Data Circuit Low |
| DTC B2958 | Security System Sensor Data Circuit High |
| DTC B2960 | Security System Sensor Data Incorrect But Valid |
| DTC B3031 | Security System Controller in Learn Mode |
| DTC B3033 | Security System Indicates Tamper |
| DTC B3109 | Keyless Entry Transmitter Low Battery |
| DTC B3127 | LF Door Only Unlock Circuit Low |
| DTC B3132 | All Door Unlock Circuit Low |
| DTC B3137 | All Door Lock Circuit Low |
| DTC B3267 | Trunk Release Output Circuit Low |
| DTC B3268 | Trunk Release Output Circuit High |
| DTC B3715, B3716, B3717, B3718, or B3719 | Front Wiper Relay Drive Circuit |
| DTC B3948 | Left Front Turn Signal Circuit |
| DTC B3949 | Right Front Turn Signal Circuit |
| DTC B3950 | Left Rear Turn Signal Circuit |
| DTC B3951 | Right Rear Turn Signal Circuit |
| DTC C0267 | Low Brake Fluid Indicated |
| DTC C0550 | ECU Malfunction |
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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