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.
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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 553 (MULTIPLEX COMMUNICATION SYSTEM - DIAGNOSTICS)CIRCUIT INSPECTIONDIAGNOSTIC TROUBLE CODE DEFINITIONS
2004 Toyota Matrix XR, FWD, Standard
Diagnostic Trouble Code Definitions
2004 Toyota Matrix XR, FWD, StandardSECTION Diagnostic Trouble Code Definitions
WARNING: This page is about a different car, the 2003 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC | Description |
|---|---|
| DTC B1211/11 | Driver door ECU communication stop |
| DTC B1212/12 | Passenger door ECU communication stop |
| DTC B1214/14 | Communication bus malfunction (+B short) |
| DTC B1215/15 | Communication bus malfunction (GND short) |
| DTC B1221/21 | Power window switch circuit on driver door |
| DTC B1222/22 | Door lock switch circuit on driver door |
| DTC B1223/23 | Power window switch circuit on passenger door |
| DTC B1224/24 | Door lock switch circuit on passenger door |
| DTC B1231/31 | Jam protection limit switch circuit on driver door |
| DTC B1232/32 | Jam protection pulse switch circuit on driver door |
| DTC B1233/33 | Jam protection limit switch circuit on passenger door |
| DTC B1234/34 | Jam protection pulse switch circuit on passenger door |
| DTC B1241/41 | Body ECU switch circuit diagnosis |
| DTC B1242/42 | Wireless door lock tuner circuit malfunction |
| DTC B1243/43 | GSW terminal circuit malfunction |
| DTC B1244/44 | Light sensor circuit malfunction |
| DTC B1271/71 | Combination meter ECU communication stop |
| DTC B1273/73 | Sliding roof ECU communication stop (w/Sliding roof vehicle only) |
| DTC B1287/87 | Back door ECU communication stop |
RENDER: 1.0x
NO RELATED
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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.