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.
Diagnostic Trouble Code Chart
- DTC CHECK
If a malfunction code is displayed during the DTC check, check the suspected area listed for that code in the table below.
DIAGNOSTIC TROUBLE CODE CHARTDTC Description DTC B1221 POWER WINDOW SWITCH CIRCUIT ON DRIVER DOOR DTC B1223 POWER WINDOW SWITCH CIRCUIT ON PASSENGER DOOR DTC B1226 POWER WINDOW SWITCH CIRCUIT ON REAR LEFT DOOR DTC B1225 POWER WINDOW SWITCH CIRCUIT ON REAR RIGHT DOOR DTC B1231, B1232 JAM PROTECTION LIMIT SWITCH CIRCUIT ON DRIVER DOOR, JAM PROTECTION PULSE SWITCH CIRCUIT ON DRIVER DOOR DTC B1233, B1234 JAM PROTECTION LIMIT SWITCH CIRCUIT ON PASSENGER DOOR, JAM PROTECTION PULSE SWITCH CIRCUIT ON PASSENGER DOOR DTC B1237, B1238 JAM PROTECTION LIMIT SWITCH CIRCUIT ON REAR LEFT DOOR, JAM PROTECTION PULSE SWITCH CIRCUIT ON REAR LEFT DOOR DTC B1235, B1236 JAM PROTECTION LIMIT SWITCH CIRCUIT ON REAR RIGHT DOOR, JAM PROTECTION PULSE SWITCH CIRCUIT ON REAR RIGHT DOOR
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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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