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.
2009 Jeep Patriot Limited, EDG, Automatic CVTFACTORY OEM SERVICE PROCEDURE
Hands Feed Module (HFM) - Electrical Diagnostics
| DTC | Description |
|---|---|
| B1435 | VOICE RECOGNITION/PHONE SWITCH INPUT CIRCUIT PERFORMANCE |
| B1438 | VOICE RECOGNITION SWITCH STUCK |
| B1439 | PHONE SWITCH STUCK |
| B143B | MICROPHONE 1 CIRCUIT LOW |
| B143C | MICROPHONE 1 CIRCUIT HIGH |
| B143E | MICROPHONE 2 CIRCUIT LOW |
| B143F | MICROPHONE 2 CIRCUIT HIGH |
| B1459 | TELEMATICS MIRROR CONTROL CIRCUIT LOW |
| B145A | TELEMATICS MIRROR CONTROL CIRCUIT HIGH |
| B2205 | ORIGINAL VIN MISSING/MISMATCH |
| B222A | VEHICLE LINE MISMATCH |
| B222E | FLASH CHECKSUM PERFORMANCE |
| B2223 | (HFM) HANDS FREE PHONE INTERNAL |
| B2230 | RAM WRITE PERFORMANCE |
| U0019 | CAN B BUS |
| U0141 | LOST COMMUNICATION WITH FRONT CONTROL MODULE (TOTALLY INTEGRATED POWER MODULE) |
| U0151 | LOST COMMUNICATION WITH OCCUPANT RESTRAINT CONTROLLER |
| U0154 | LOST COMMUNICATION WITH OCCUPANT CLASSIFICATION MODULE |
| U0155 | LOST COMMUNICATION WITH CLUSTER/CCN |
| U0167 | LOST COMMUNICATION WITH INTRUSION TRANSCEIVER CONTROL MODULE |
| U0168 | LOST COMMUNICATION WITH VEHICLE SECURITY CONTROL MODULE (WCM) |
| U0184 | LOST COMMUNICATION WITH RADIO |
| U0186 | LOST COMMUNICATION WITH AUDIO AMPLIFIER |
| U0195 | LOST COMMUNICATION WITH SDARS |
| U0199 | LOST COMMUNICATION WITH DRIVER DOOR MODULE |
| U0200 | LOST COMMUNICATION WITH PASSENGER DOOR MODULE |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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