LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2012 >> Mustang Base, 2D Convertible, Automatic Trans >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Anti-Theft System DTCS >> Passive Anti-Theft
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Passive Anti-Theft

INSTRUMENT PANEL CLUSTER (IPC) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Action
B10D5:13 PATS Antenna: Circuit Open There has been a Passive Anti-Theft System (PATS) transceiver antenna failure. GO to PINPOINT TEST A .
B10D7:05 PATS Key: System Programming Failures There was a failure in key programming. GO to PINPOINT TEST I .
B10D7:51 PATS Key: Not Programmed There is an unprogrammed PATS key. GO to PINPOINT TEST C .
B10D7:87 PATS Key: Missing Message No PATS key has been read by the IPC. GO to PINPOINT TEST B .
B10D7:8F PATS Key: Erratic Only a partial PATS key was read. GO to PINPOINT TEST D .
B10D8:00 PATS Key Less Than Minimum Programmed: No Sub Type Information If DTCs B10D7:87, B10D7:51, B10D7:8F, B10D9:87 or B10D5:13 are present, they must be addressed first. If DTC B10D8:00 is the only DTC present, PROGRAM additional keys. REFER to INTEGRATED KEYHEAD TRANSMITTER (IKT) KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT . CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test.
B10D9:87 PATS Transponder: Missing Message The Instrument Panel Cluster (IPC) did not receive the PATS transceiver signal. GO to PINPOINT TEST E .
B10DA:51 PATS PCM Identifier: Not Programmed There is no PCM ID stored in the IPC. CARRY OUT a parameter reset of the IPC and the PCM, then CYCLE the ignition and make an attempt to start the vehicle. REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) PARAMETER RESET . CLEAR the DTCs. REPEAT the self-test.
B10DA:61 PATS PCM Identifier: Signal Calculation Failure CARRY OUT a parameter reset of the IPC and the PCM and CYCLE the ignition 3-5 times, making an attempt to start the vehicle each key cycle. REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) PARAMETER RESET . CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test.
B10DA:86 PATS PCM Identifier: Signal Invalid
NOTE: If DTCs B10DA:61 and B10DA:86 are both present, address DTC B10DA:61 first.
GO to PINPOINT TEST G .
B1218:44 Transmitter Identification Code: Data Memory Failure The Smart Junction Box (SJB) has 4 Integrated Keyhead Transmitters (IKTs) stored in memory and cannot program any more IKTs into the memory. A maximum of 4 IKT keys can be programmed to start the vehicle and also operate the Remote Keyless Entry (RKE) functions. If more than 4 IKT keys are programmed, the RKE portion of the additional IKT keys do not operate and the SJB sets a memory full DTC. These additional keys starts the vehicle, but does not operate the RKE system. If additional PATS keys are desired, a standard PATS key (a non-IKT key) can be used. REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1218:51 Transmitter Identification Code: Not Programmed PROGRAM the keys. REFER to INTEGRATED KEYHEAD TRANSMITTER (IKT) KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT . CYCLE the ignition and make an attempt to start the vehicle. CLEAR the DTCs. REPEAT the self-test. If the DTC B1218:51 is retrieved again, REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1218:81 Transmitter Identification Code: Invalid Serial Data Receive REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
U0100:00 Lost Communication With ECM/PCM "A": No Sub Type Information
NOTE: If DTCs U0100:00 and B10DA:61 are both present, address DTC B10DA:61 first.
GO to PINPOINT TEST G .
U0100:87 Lost Communication With ECM/PCM "A"
NOTE: If IPC DTCs U0100:87 and B10DA:61 are both present, address DTC B10DA:61 first.
GO to PINPOINT TEST G .
All other DTCs - REFER to the Diagnostic Trouble Code (DTC) Chart in MULTIFUNCTION ELECTRONIC MODULES .
PCM DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Action
P1260 Theft Detected, Vehicle Immobilized If there are any Passive Anti-Theft System (PATS) DTCs present in the Instrument Panel Cluster (IPC), ADDRESS them first. This DTC may also indicate a Controller Area Network (CAN) or parameter reset issue. Be sure to verify if there are any communication issues/DTCs with any modules. REFER to MODULE COMMUNICATIONS NETWORK . If DTC P1260 is the only DTC present, there may be a parameter reset, power or ground concern with the PCM. REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) PARAMETER RESET . If necessary, CHECK the powers and grounds to the PCM. REFER to the SYSTEM WIRING DIAGRAMS to determine the PCM power and ground circuits.
P1602 Immobilizer/ECM Communication Error
NOTE: If IPC DTC B10DA:61 is also present, address DTC B10DA:61 first.
GO to PINPOINT TEST G .
P1622 Immobilizer ID Does Not Match CARRY OUT a parameter reset. REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) PARAMETER RESET . CLEAR the DTCs. CYCLE the ignition 3-5 times, making an attempt to start the vehicle each key cycle. REPEAT the self-test.
All other DTCs - REFER to the INTRODUCTION - GASOLINE MODELS .
scientia non olet · About LEMON Manuals