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 MANUALSLINCOLN2008NAVIGATOR 4WD V8-5.4LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONMONITORS, TRIPS, DRIVE CYCLES AND READINESS CODESCLEAR THE CONTINUOUS DIAGNOSTIC TROUBLE CODES (DTCS) AND RESET THE EMISSION MONITORS INFORMATION IN THE POWERTRAIN CONTROL MODU
2008 Lincoln Navigator 4WD V8-5.4L
Clear the Continuous Diagnostic Trouble Codes (DTCs) and Reset the Emission Monitors Information In the Powertrain Control Modu
2008 Lincoln Navigator 4WD V8-5.4LSECTION Clear the Continuous Diagnostic Trouble Codes (DTCs) and Reset the Emission Monitors Information In the Powertrain Control Modu
CLEAR THE CONTINUOUS DIAGNOSTIC TROUBLE CODES (DTCs) AND RESET THE EMISSION MONITORS INFORMATION IN THE POWERTRAIN CONTROL MODULE (PCM)
Description
All on board diagnostics (OBD) scan tools support the clearing of continuous DTCs and resetting of emission monitors information in the PCM.
The clearing of the continuous DTCs allows the scan tool to command the PCM to clear/reset all emission-related diagnostic information. While carrying out this operation DTC PI000 is stored in the PCM until all the OBD system monitors or components have been tested to satisfy a drive cycle without any other concerns occurring. For more information about a drive cycle, refer to On Board Diagnostic (OBD) Drive Cycle. On Board Diagnostic (OBD) Drive Cycle
The following events occur when the continuous DTCs and the emission monitors information is cleared from the PCM:
- the number of DTCs is reset
- the DTCs are cleared
- the freeze frame data is cleared
- the diagnostic monitoring test results are reset
- the status of the OBD system monitors is reset
- DTC P1000 is set
Description
All on board diagnostics (OBD) scan tools support the clearing of continuous DTCs and resetting of emission monitors information in the PCM.
The clearing of the continuous DTCs allows the scan tool to command the PCM to clear/reset all emission-related diagnostic information. While carrying out this operation DTC PI000 is stored in the PCM until all the OBD system monitors or components have been tested to satisfy a drive cycle without any other concerns occurring. For more information about a drive cycle, refer to On Board Diagnostic (OBD) Drive Cycle. On Board Diagnostic (OBD) Drive Cycle
The following events occur when the continuous DTCs and the emission monitors information is cleared from the PCM:
- the number of DTCs is reset
- the DTCs are cleared
- the freeze frame data is cleared
- the diagnostic monitoring test results are reset
- the status of the OBD system monitors is reset
- DTC P1000 is set
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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.