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.
2012 Lincoln MKT Base, FWDFACTORY OEM SERVICE PROCEDURE
Cruise Control System DTCS
PCM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| P0579 | Cruise Control Multi-Function Input A Circuit Range/Performance | GO to PINPOINT TEST C . |
| P0581 | Cruise Control Multi-Function Input A Circuit High | GO to PINPOINT TEST C . |
| P1703 | Brake Switch Out Of Self Test Range | GO to PINPOINT TEST B . |
| U0104 | Lost Communication With Cruise Control Module | GO to PINPOINT TEST M . |
| U0129 | Lost Communication With Brake System Module | GO to PINPOINT TEST H . |
| All other DTCs | - | REFER to the INTRODUCTION - GASOLINE MODELS . |
CRUISE-CONTROL MODULE (C-CM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| C0072:00 | Brake Temperature Too High: No Sub Type Information | REFER to VEHICLE DYNAMIC SYSTEMS to continue diagnosis of the ABS system. |
| C1A67:54 | Forward Looking Sensor: Missing Calibration | GO to PINPOINT TEST E . |
| C1A67:76 | Forward Looking Sensor: Wrong Mounting Position | GO to PINPOINT TEST E . |
| C1A67:96 | Forward Looking Sensor: Component Internal Failure | GO to PINPOINT TEST D . |
| C1A67:97 | Forward Looking Sensor: Component or System Operation Obstructed or Blocked | GO to PINPOINT TEST F . |
| C1A67:98 | Forward Looking Sensor: Component or System Over Temperature | The Cruise-Control Module (C-CM) was over-temperature. This may occur during extended use or extremely high weather temperatures. The adaptive cruise control system operation resumes after the C-CM cools. CLEAR the DTCs. TEST the system for normal operation. |
| U0001:88 | High Speed CAN Communication Bus: Bus Off | REFER to MODULE COMMUNICATIONS NETWORK . |
| U0100:00 | Lost Communication With ECM/PCM "A": No Sub Type Information | GO to PINPOINT TEST G . |
| U0121:00 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information | GO to PINPOINT TEST H . |
| U0126:00 | Lost Communication With Steering Angle Sensor Module: No Sub Type Information | GO to PINPOINT TEST I . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information | GO to PINPOINT TEST J . |
| U0158:00 | Lost Communication With Head Up Display: No Sub Type Information | GO to PINPOINT TEST K . |
| U0180:00 | Lost Communication With Automatic Lighting Control Module: No Sub Type Information | GO to PINPOINT TEST L . |
| U0300:55 | Internal Control Module Software Incompatibility: Not Configured | GO to PINPOINT TEST N . |
| U0401:68 | Invalid Data Received from ECM/PCM A: Event Information | DTC U0401:68 is set when the C-CM receives invalid network data from the PCM with a faulted Vehicle Speed Sensor (VSS) signal, Accelerator Pedal Position (APP) signal, cruise control switch input or gear position input. RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U0418:68 | Invalid Data Received From Brake System Control Module: Event Information | DTC U0418:68 is set when the C-CM receives invalid network data from the ABS module with a faulted brake signal input. RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U0424:68 | Invalid Data Received From HVAC Control Module: Event Information | DTC U0424:68 is set when the C-CM receives invalid network data from the HVAC module with a faulted sunload sensor input. RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U0428:68 | Invalid Data Received From Steering Angle Sensor Module: Event Information | DTC U0428:68 is set when the C-CM receives invalid network data from the Steering Angle Sensor Module (SASM) with a faulted steering wheel angle input. RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U0459:68 | Invalid Data Received From Head Up Display: Event Information | GO to PINPOINT TEST T . |
| U0513:68 | Invalid Data Received From Yaw Rate Sensor Module: Event Information | DTC U0513:68 is set when the C-CM receives invalid network data from the ABS module that gateways the yaw rate sensor input from the Restraints Control Module (RCM). RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U02100:00 | Initial Configuration Not Complete: No Sub Type Information | DTC U02100:00 sets when the C-CM detects that the PCM is not transmitting the Vehicle Identification Number (VIN). The PCM needs to be configured. CARRY OUT the Programmable Module Installation (PMI). REFER to MODULE CONFIGURATION . |
| U02101:00 | Control Module Configuration Incompatible: No Sub Type Information | DTC U02101:00 sets when the C-CM detects the PCM is transmitting the incorrect VIN information. The PCM needs to be configured. CARRY OUT the PMI. REFER to MODULE CONFIGURATION . |
| U3000:41 | Control Module: General Checksum Failure | CLEAR the DTCs. REPEAT the self-test. If DTC U3000:41 is retrieved again, INSTALL a new C-CM. REFER to CRUISE-CONTROL MODULE (C-CM) . TEST the system for normal operation. |
| U3000:42 | Control Module: General Memory Failure | CLEAR the DTCs. RETEST the adaptive cruise control system. REPEAT the self-test. If DTC U3000:42 is retrieved again, INSTALL a new C-CM. REFER to CRUISE-CONTROL MODULE (C-CM) . TEST the system for normal operation. |
| U3000:44 | Control Module: Data Memory Failure | CLEAR the DTCs. RETEST the adaptive cruise control system. REPEAT the self-test. If DTC U3000:44 is retrieved again, INSTALL a new C-CM. REFER to CRUISE-CONTROL MODULE (C-CM) . TEST the system for normal operation. |
| U3000:49 | Control Module: Internal Electronic Failure | CLEAR the DTCs. REPEAT the self-test. If DTC U3000:49 is retrieved again, INSTALL a new C-CM. REFER to CRUISE-CONTROL MODULE (C-CM) . TEST the system for normal operation. |
| U3000:63 | Control Module: Circuit/Component Protection Time-Out | GO to PINPOINT TEST O . |
| U3000:66 | Control Module: Signal Has Too Many Transitions/Events | GO to PINPOINT TEST P . |
| U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | GO to PINPOINT TEST Q . |
| U3003:17 | Battery Voltage: Circuit Voltage Above Threshold | GO to PINPOINT TEST R . |
ABS MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| C1105 | Traction Control Disable Lamp Circuit Short To Battery |
NOTE:
Despite the description, this DTC pertains to the brake lamp relay short to ground or short to power. GO to PINPOINT TEST S
. |
| U0405 | Invalid Data Received From Cruise Control Module | GO to PINPOINT TEST A . |
Factory Service Tools
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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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