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 1 AutomaticFACTORY 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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