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 MANUALSLINCOLN2009NAVIGATOR 4WDREPAIR AND DIAGNOSISQUICK LOOKUPSDTC INDEXEXTERIOR TRIM & ORNAMENTATION SYSTEMS DTCS
2009 Lincoln Navigator 4WD
Exterior Trim & Ornamentation Systems DTCS
2009 Lincoln Navigator 4WDSECTION Exterior Trim & Ornamentation Systems DTCS
POWER RUNNING BOARD (PRB) MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| B1162 | Power Running Board Hall Effect Sensor Power Circuit Short to Battery | Go To PINPOINT TEST E . |
| B1163 | Left Power Running Board Hall Effect Sensor Failure | Go To PINPOINT TEST E . |
| B1164 | Power Running Board Hall Effect Sensor Power Circuit Short To Ground | Go To PINPOINT TEST E . |
| B1167 | Left Power Running Board Deploy and/or Stow Circuit Short To Battery | Go To PINPOINT TEST D . |
| B1168 | Left Power Running Board Motor Circuit Short To Ground | Go To PINPOINT TEST D . |
| B1169 | LH Motor Traveled Too Far | LH motor is freewheeling (broken geartrain linkage). INSTALL a new LH Power Running Board (PRB) motor. REFER to POWER RUNNING BOARD (PRB) MOTOR . |
| B116A | RH Motor Traveled Too Far | RH motor is freewheeling (broken geartrain linkage). INSTALL a new RH PRBÂ motor. REFER to POWER RUNNING BOARD (PRB) MOTOR . |
| B116B | LH Power Running Board Motor Short | Go To PINPOINT TEST D . |
| B116C | RH Power Running Board Motor Short | Go To PINPOINT TEST D . |
| B116D | LH Power Running Board Motor Line Open | Go To PINPOINT TEST D . |
| B116E | RH Power Running Board Motor Line Open | Go To PINPOINT TEST D . |
| B1170 | Right Power Running Board Hall Effect Sensor Failure | Go To PINPOINT TEST E . |
| B1171 | Left Power Running Board Hall Effect Signal Noisy | INSTALL a new LH PRBÂ motor. REFER to POWER RUNNING BOARD (PRB) MOTOR . |
| B1172 | Right Power Running Board Hall Effect Signal Noisy | INSTALL a new RH PRBÂ motor. REFER to POWER RUNNING BOARD (PRB) MOTOR . |
| B1175 | Right Power Running Board Motor Circuit Short To Ground | Go To PINPOINT TEST D . |
| B1178 | Right Power Running Board Deploy and/or Stow Circuit Short To Battery | Go To PINPOINT TEST D . |
| B1317 | Battery Voltage High | Go To PINPOINT TEST F . |
| B1318 | Battery Voltage Low | Go To PINPOINT TEST F . |
| B1342 | ECU is Faulted | INSTALL a new PRBÂ module. REFER to POWER RUNNING BOARD (PRB) MODULE . |
| B2139 | Data Mismatch (receive data does not match what was expected) | REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| B2813 | LH Power Running Board Stow Time Fail | Go To PINPOINT TEST B . |
| B2814 | LH Power Running Board Deploy Time Fail | Go To PINPOINT TEST B . |
| B2816 | RH Power Running Board Stow Time Fail | Go To PINPOINT TEST F . |
| B2817 | RH Power Running Board Deploy Time Fail | Go To PINPOINT TEST C . |
| U1900 | CAN Communication Bus Fault - Receive Error | Do not install a new PRBÂ module as part of the repair for a PRBÂ DTC U1900 fault. The PRBÂ is not the source of the fault when DTC U1900 is present. REFER to MODULE COMMUNICATIONS NETWORK to diagnose the Medium Speed Controller Area Network (MS-CAN) concern. |
| U2050 | No Application Present | INSTALL a new PRBÂ module. REFER to MULTIFUNCTION ELECTRONIC MODULES . REPEAT the self-test. |
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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.