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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSACURA2015TLX BASE, 2.4L ENGREPAIR AND DIAGNOSISQUICK LOOKUPSDTC INDEXCLIMATE CONTROL DTCS
2015 Acura TLX Base, 2.4L Eng
Climate Control DTCS
2015 Acura TLX Base, 2.4L EngSECTION Climate Control DTCS
2015-2017
| DTC | Detection Item or Symptom | ECU | DTC Type |
|---|---|---|---|
| B1215 | An open or short in the recirculation control motor circuit | Climate control unit | Signal error |
| B1225 | An open in the in-car temperature sensor circuit | Climate control unit | Signal error |
| B1226 | A short in the in-car temperature sensor circuit | Climate control unit | Signal error |
| B1227 | An open in the outside air temperature sensor circuit | Climate control unit | Signal error |
| B1228 | A short in the outside air temperature sensor circuit | Climate control unit | Signal error |
| B1229 | An open in the sunlight sensor circuit | Climate control unit | Signal error |
| B1230 | A short in the sunlight sensor circuit | Climate control unit | Signal error |
| B1231 | An open in the evaporator temperature sensor circuit | Climate control unit | Signal error |
| B1232 | A short in the evaporator temperature sensor circuit | Climate control unit | Signal error |
| B1233 | An open in the air mix control motor circuit (driver's) | Climate control unit | Signal error |
| B1234 | A short in the air mix control motor circuit (driver's) | Climate control unit | Signal error |
| B1235 | A problem in the air mix control motor circuit, linkage, door, or motor (driver's) | Climate control unit | Signal error |
| B1236 | An open in the passenger's air mix control motor circuit | Climate control unit | Signal error |
| B1237 | A short in the passenger's air mix control motor circuit | Climate control unit | Signal error |
| B1238 | A problem in the passenger's air mix control motor circuit, linkage, door, or motor | Climate control unit | Signal error |
| B1239 | An open or short in the mode control motor circuit | Climate control unit | Signal error |
| B1240 | A problem in the mode control motor circuit, linkage, door, or motor | Climate control unit | Signal error |
| B1241 | A problem in the blower motor circuit | Climate control unit | Signal error |
| B2967 | An open in the humidity sensor circuit | Climate control unit | Signal error |
| B2968 | A short in the humidity sensor circuit | Climate control unit | Signal error |
| B2983 | A problem in the recirculation control motor circuit, linkage, door, or motor | Climate control unit | Signal error |
| B2988 | A problem in the A/C compressor variable capacity control solenoid circuit | Climate control unit | Signal error |
| U1280 | Communication bus line error (BUS-OFF) | Climate control unit | Loss of communication |
| U1281 | Lost communication with MICU (climate control unit) | Climate control unit | Loss of communication |
| U128D | Lost communication with gauge control module (climate control unit) | Climate control unit | Loss of communication |
| U1290 - Refer to: DTC Troubleshooting: U1290 (D-B3) (With Auto Idle Stop System), or DTC Troubleshooting: U1290 (D-B3) (Without Auto Idle Stop System) | Lost communication with seat heater control unit (lost communication with ventilated seat control unit *1 or lost communication with front seat heater control unit *2) (climate control unit) | Climate control unit | Loss of communication |
*1: With ventilated seat
*2: Without ventilated seat
2018-2020
| DTC | Detection Item or Symptom | ECU | DTC Type |
|---|---|---|---|
| B1215 | An open or short in the recirculation control motor circuit | Climate control unit | Signal error |
| B1225 | An open in the in-car temperature sensor circuit | Climate control unit | Signal error |
| B1226 | A short in the in-car temperature sensor circuit | Climate control unit | Signal error |
| B1227 | An open in the outside air temperature sensor circuit | Climate control unit | Signal error |
| B1228 | A short in the outside air temperature sensor circuit | Climate control unit | Signal error |
| B1229 | An open in the sunlight sensor circuit | Climate control unit | Signal error |
| B1230 | A short in the sunlight sensor circuit | Climate control unit | Signal error |
| B1231 | An open in the evaporator temperature sensor circuit | Climate control unit | Signal error |
| B1232 | A short in the evaporator temperature sensor circuit | Climate control unit | Signal error |
| B1233 | An open in the air mix control motor circuit (driver's) | Climate control unit | Signal error |
| B1234 | A short in the air mix control motor circuit (driver's) | Climate control unit | Signal error |
| B1235 | A problem in the air mix control motor circuit, linkage, door, or motor (driver's) | Climate control unit | Signal error |
| B1236 | An open in the passenger's air mix control motor circuit | Climate control unit | Signal error |
| B1237 | A short in the passenger's air mix control motor circuit | Climate control unit | Signal error |
| B1238 | A problem in the passenger's air mix control motor circuit, linkage, door, or motor | Climate control unit | Signal error |
| B1239 | An open or short in the mode control motor circuit | Climate control unit | Signal error |
| B123F | Automatic lighting control unit/sunlight sensor error | Climate control unit | Signal error |
| B1240 | A problem in the mode control motor circuit, linkage, door, or motor | Climate control unit | Signal error |
| B1241 | A problem in the blower motor circuit | Climate control unit | Signal error |
| B2967 | An open in the humidity sensor circuit | Climate control unit | Signal error |
| B2968 | A short in the humidity sensor circuit | Climate control unit | Signal error |
| B2983 | A problem in the recirculation control motor circuit, linkage, door, or motor | Climate control unit | Signal error |
| B2988 | A problem in the A/C compressor variable capacity control solenoid circuit | Climate control unit | Signal error |
| U0180 | Climate control unit lost communication with automatic lighting control unit-sensor | Climate control unit | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Climate control unit | Loss of communication |
| U1281 | Lost communication with MICU (climate control unit) | Climate control unit | Loss of communication |
| U128D | Lost communication with gauge control module (climate control unit) | Climate control unit | Loss of communication |
| U1290 - Refer to: DTC Troubleshooting: U1290 (D-B3) (With Auto Idle Stop System), or DTC Troubleshooting: U1290 (D-B3) (Without Auto Idle Stop System) | Lost communication with seat heater control unit (lost communication with ventilated seat control unit *1 or lost communication with front seat heater control unit *2) (climate control unit) | Climate control unit | Loss of communication |
*1: With ventilated seat
*2: Without ventilated seat
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.