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 MANUALSMITSUBISHI2012LANCER RALLIARTREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEX - LANCERKEYLESS OPERATION SYSTEM (KOS) DTCS
2012 Mitsubishi Lancer Ralliart
Keyless Operation System (Kos) DTCS
2012 Mitsubishi Lancer RalliartSECTION Keyless Operation System (Kos) DTCS
KEYLESS OPERATION SYSTEM (KOS) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B1731 | Engine control module communication timeout |
| B1761 | VIN code not programmed |
| B1A08 | Keyless/KOS key1 performance |
| B1A09 | Keyless/KOS key2 performance |
| B1A0A | Keyless/KOS key3 performance |
| B1A0B | Keyless/KOS key4 performance |
| B1A10 | Keyless/KOS key 1 low battery |
| B1A11 | Keyless/KOS key 2 low battery |
| B1A12 | Keyless/KOS key 3 low battery |
| B1A13 | Keyless/KOS key 4 low battery |
| B1A24 | Key ID not registered |
| B1A25 | Key ID unmatched |
| B1A28 | Engine control module authenticate error |
| B1A35 | Transponder read error |
| B2101 | IG SW start POS.circuit low |
| B2102 | IG SW start POS.circuit high |
| B2204 | Coding data mismatch |
| B2206 | VIN code mismatch |
| B2352 | Antenna fail |
| B2400 | KOS key registration fail |
| B2401 | Keyless/KOS key ID not registered |
| B2402 | STL unit comm. (system ID) |
| B2403 | STL unit comm. (CRC) |
| B2404 | STL unit comm. (function code) |
| B2405 | STL unit comm. (rolling code) |
| B2406 | STL unit comm. (PTC operate) |
| B2407 | STL unit comm. (EEPROM) |
| B2408 | STL unit comm. (solenoid) |
| B2409 | STL unit comm. (No response) |
| B240A | DR side antenna (outdoor) open |
| B240B | PS side antenna (outdoor) open |
| B240C | Tail gate antenna (outdoor) open < LANCER > |
| TAIL gate antenna (outdoor) open < LANCER SPORTBACK > | |
| B240D | Front antenna (indoor) open |
| B240E | RR antenna (indoor) open |
| B2412 | Antenna power voltage < LANCER > |
| ANTENNA power voltage < LANCER SPORTBACK > | |
| B2413 | STL unit power voltage |
| B2415 | RA module power voltage |
| B2416 | ECU internal error |
| C1608 | EEPROM error |
| C1900 | No registration |
| C1901 | Vehicle speed information abnormality |
| C1910 | Transmitter low battery voltage abnormality 1 |
| C1920 | Transmitter low battery voltage abnormality 2 |
| C1930 | Transmitter low battery voltage abnormality 3 |
| C1940 | Transmitter low battery voltage abnormality 4 |
| C1911 | Reception abnormality 1 |
| C1921 | Reception abnormality 2 |
| C1931 | Reception abnormality 3 |
| C1941 | Reception abnormality 4 |
| C1912 | Tire inflation pressure warning 1 |
| C1922 | Tire inflation pressure warning 2 |
| C1932 | Tire inflation pressure warning 3 |
| C1942 | Tire inflation pressure warning 4 |
| C1913 | Acceleration sensor abnormality 1 |
| C1923 | Acceleration sensor abnormality 2 |
| C1933 | Acceleration sensor abnormality 3 |
| C1943 | Acceleration sensor abnormality 4 |
| C1914 | Pressure sensor abnormality 1 |
| C1924 | Pressure sensor abnormality 2 |
| C1934 | Pressure sensor abnormality 3 |
| C1944 | Pressure sensor abnormality 4 |
| C1915 | Transmitter OFF mode 1 |
| C1925 | Transmitter OFF mode 2 |
| C1935 | Transmitter OFF mode 3 |
| C1945 | Transmitter OFF mode 4 |
| U0019 | Bus off (CAN-B) |
| U0141 | ETACS-ECU CAN timeout |
| U0151 | SRS-ECU CAN timeout |
| U0154 | Occupant classification-ECU CAN timeout |
| U0155 | Combination meter CAN timeout |
| U0164 | A/C-ECU < vehicles with A/C > or heater control unit < vehicles without A/C > CAN timeout |
| U0184 | Audio CAN timeout |
| U0195 | Satellite radio tuner CAN timeout |
| U0245 | Audio visual navigation unit CAN timeout |
| U1412 | Implausible vehicle speed signal received |
| U1415 | Coding not completed/Data fail |
| U1417 | Implausible coding data |
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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.