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DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC	Description	Source	Perform Test
B2477	Module Configuration Failure	ABS module Audio control module (ACM) Driver seat module (DSM) Heating ventilation air conditioning (HVAC) module Instrument cluster (IC) Parking aid module (PAM) (Mountaineer, Explorer Sport Trac) Rear entertainment module (RETM) Restraints control module (RCM) Satellite digital audio receiver system (SDARS) module Smart junction box (SJB)	CARRY OUT PMI. REFER to Programmable Module Installation .
B2477	Module Configuration Failure	Accessory protocol interface module (APIM)	REFER to Accessory Protocol Interface Module (APIM) Programming .
B2477	Module Configuration Failure	Occupant classification system module (OCSM)	INSTALL a new OCSM. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2900	VIN mismatch	ABS module	CARRY OUT PMI. REFER to Programmable Module Installation .
P0602	Powertrain Control Module Programming Error	PCM	CARRY OUT PMI. REFER to Programmable Module Installation .
P0605	Internal Control Module Read Only Memory (ROM) Error	PCM	CARRY OUT PMI. REFER to Programmable Module Installation .
P0605	Internal Control Module Read Only Memory (ROM) Error	Transmission control module (TCM)	INSTALL a new TCM. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 6R60 article.
P1639	Vehicle ID Block Corrupted, Not Programmed	PCM	CARRY OUT PMI. REFER to Programmable Module Installation .
U0300	Internal Module Software Incompatibility	RCM	CARRY OUT PMI. REFER to Programmable Module Installation .
U2050	No Application Present	ABS module ACM DSM HVAC module IC Power running board (PRB) module RCM RETM SDARS module SJB 4X4 control module	CARRY OUT PMI. REFER to Programmable Module Installation .
U2050	No Application Present	APIM	REFER to Accessory Protocol Interface Module (APIM) Programming .
U2050	No Application Present	OCSM	INSTALL a new OCSM. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
U2051	One or More Calibration Files Missing / Corrupt	ACM IC RCM	CARRY OUT PMI. REFER to Programmable Module Installation .
U2051	One or More Calibration Files Missing / Corrupt	OCSM	INSTALL a new OCSM. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
U2051	One or More Calibration Files Missing / Corrupt	Parking aid module (PAM)	INSTALL a new PAM. REFER to PARKING AID article.

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.

Safety Warning

Module Configuration

Use the Manual With the Right Hardware

When to See a Mechanic

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