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 MANUALSFORD2019TRANSIT-150 BASE, 3.7L ENG VIN M, GAS/ETHANOLREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXCLIMATE CONTROL SYSTEM DTCSBCM
2019 Ford Transit-150 Base, 3.7L Eng VIN M, Gas/Ethanol
Climate Control System DTCS: BCM
2019 Ford Transit-150 Base, 3.7L Eng VIN M, Gas/EthanolSECTION BCM
| DTC | Description | Action |
|---|---|---|
| B10AF:12 | Blower Fan Relay: Circuit Short To Battery | GO to Pinpoint Test L |
| B10AF:14 | Blower Fan Relay: Circuit Short To Ground Or Open | If the blower motor is inoperative, GO to Pinpoint Test L If the blower motor will not shut off, GO to Pinpoint Test M |
| B10EA:12 | Positive Temperature Coefficient Heater: Circuit Short To Battery | GO to Pinpoint Test A |
| B10EA:14 | Positive Temperature Coefficient Heater: Circuit Short To Ground Or Open | GO to Pinpoint Test A |
| B1322:17 | Auxiliary Heater Switch: Circuit Voltage Above Threshold | GO to Pinpoint Test A |
| B121F:11 | Climate Switch: Circuit Short To Ground | If the HVAC selector was not powered off, POWER the HVAC off, CLEAR the BCM Diagnostic Trouble Codes (DTCs) and REPEAT the BCM self-test. If the DTC does not return, IGNORE the DTC and continue diagnosing other Diagnostic Trouble Codes (DTCs) or symptoms. If the DTC returns, GO to Pinpoint Test R |
| B1B71:11 | Evaporator Temperature Sensor: Circuit Short To Ground | GO to Pinpoint Test D |
| B1B71:15 | Evaporator Temperature Sensor: Circuit Short To Battery or Open | GO to Pinpoint Test D |
| All Other BCM Diagnostic Trouble Codes (DTCs) | -- | REFER to: BODY CONTROL MODULE (BCM) . |
RENDER: 1.0x
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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.