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.
2012 Acura ZDXFACTORY OEM SERVICE PROCEDURE
Climate Control System DTCS
CLIMATE CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| U1280 | Communication bus line error (BUS-OFF) |
| U0155 | Lost communication with gauge control module (climate control unit) |
| B1215 | An open or short in the recirculation control motor circuit |
| B1225 | An open in the in-car temperature sensor circuit |
| B1226 | A short in the in-car temperature sensor circuit |
| B1227 | An open in the outside air temperature sensor circuit |
| B1228 | A short in the outside air temperature sensor circuit |
| B1229 | An open in the sunlight sensor circuit |
| B1230 | A short in the sunlight sensor circuit |
| B1231 | An open in the evaporator temperature sensor circuit |
| B1232 | A short in the evaporator temperature sensor circuit |
| B1233 | An open in the air mix control motor circuit (driver's) |
| B1234 | A short in the air mix control motor circuit (driver's) |
| B1235 | A problem in the air mix control motor circuit, linkage, door, or motor (driver's) |
| B1236 | An open in the passenger's air mix control motor circuit |
| B1237 | A short in the passenger's air mix control motor circuit |
| B1238 | A problem in the passenger's air mix control motor circuit, linkage, door, or motor |
| B1239 | An open or short in the mode control motor circuit (driver's) |
| B1240 | A problem in the mode control motor circuit, linkage, door, or motor (driver's) |
| B1241 | A problem in the blower motor circuit |
| B1242 | An open or short in the passenger's mode control motor circuit |
| B1243 | A problem in the passenger's mode control motor circuit, linkage, door, or motor |
| B2967 | An open in the humidity sensor circuit |
| B2968 | A short in the humidity sensor circuit |
| B2969 | Climate control unit lost communication with MICU (WIPSW message) (driver's) |
| B2979 | An open in the A/C pressure sensor circuit |
| B2980 | A short in the A/C pressure sensor circuit |
| B2983 | A problem in the recirculation control motor circuit, linkage, door, or motor |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.