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 MANUALSTOYOTA20054RUNNER LIMITED, 4.0 U, 4WDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTWARNING SYSTEMSTIRE PRESSURE WARNING SYSTEM - DIAGNOSTICSDIAGNOSTIC TROUBLE CODE CHART
2005 Toyota 4Runner Limited, 4.0 U, 4WD
Diagnostic Trouble Code Chart
2005 Toyota 4Runner Limited, 4.0 U, 4WDSECTION Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODES (DTC) LIST
| DTC | Description |
|---|---|
| DTC C2111/11, C2112/12, C2113/13, C2114/14, C2115/15 | TRANSMITTER ID1-ID5 OPERATION STOP |
| DTC C2121/21, C2122/22, C2123/23, C2124/24, C2125/25, C2181/81, C2182/82, C2183/83, C2184/84, C2185/85 | TRANSMITTER ID1-ID5 NOT RECEIVED & TRANSMITTER ID1-ID5 NOT RECEIVED (TEST DIAGNOSIS) |
| DTC C2141/41, C2142/42, C2143/43, C2144/44, C2145/45 | TRANSMITTER ID1-ID5 ERROR |
| DTC C2165/65, C2166/66, C2167/67, C2168/68, C2169/69 | ABNORMAL TEMPERATURE INSIDE ID1-ID5 TIRE |
| DTC C2171/71 | TRANSMITTER ID NOT REGISTERED |
| DTC C2176/76 | RECEIVER ERROR |
| DTC C2191/91 | VEHICLE SPEED SIGNAL ERROR |
HINT:
- If any abnormality is not found when the parts are inspected, inspect the tire pressure monitor ECU.
- If a malfunction code is displayed during the DTC check, inspect the circuit listed for that code. For details of each code, refer to the "See Example" under respective "DTC No." in the DTC chart.
DTC chart of Tire Pressure Warning:
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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.