Ford Excursion, Expedition, Lincoln Navigator 2000-2005
Print4.6L V8 VIN 6 Auto
Trouble Code: P0018Crankshaft Position - Camshaft Position Correlation - Bank 2 Sensor A Possible Causes:Camshaft timing incorrectly set VCT solenoid stuck in position Camshaft advance mechanism binding (VCT unit)
Trouble Code: P0102MAF Sensor Circuit Low Input Possible Causes:Check for leaks at air outlet tube Sensor power circuit open, sensor ground circuit open Sensor signal circuit open (may be disconnected) Check for loose tube clamps near the MAF sensor
Trouble Code: P0103MAF Sensor Circuit High Input Possible Causes:Check for a restricted inlet screen on the MAF sensor. MAF sensor signal circuit is shorted to system power (B+) MAF sensor is damaged or the PCM has failed
Trouble Code: P0112Intake Air Temperature Sensor Circuit Low Input Possible Causes:IAT sensor signal circuit is grounded (check wiring & connector) IAT sensor is damaged or it has failed PCM has failed
Trouble Code: P0113Intake Air Temperature Sensor Circuit High Input Possible Causes:IAT sensor signal circuit is open (inspect wiring & connector) IAT sensor signal circuit is shorted to VREF (5v) IAT sensor is damaged or it has failed PCM has failed
Trouble Code: P0117ECT Sensor Circuit Low Input Possible Causes:ECT sensor signal circuit is grounded in the wiring harness ECT sensor is damaged or the PCM has failed
Trouble Code: P0118ECT Sensor Circuit High Input Possible Causes:ECT sensor signal circuit is open (inspect wiring & connector) ECT sensor signal circuit is shorted to VREF (5v) ECT sensor is damaged or it has failed PCM has failed
Trouble Code: P0121TP Sensor Signal Range/Performance Possible Causes:Throttle plate is binding, dirty or sticking TP sensor signal circuit open (inspect wiring & connector) TP sensor ground circuit open (inspect wiring & connector) TP Sensor is damaged or has failed Trouble Code: P0122TP Sensor Circuit Low Input Possible Causes:TP sensor signal circuit open (inspect wiring & connector) TP sensor signal shorted to ground (inspect wiring & connector) TP sensor VREF circuit is open (between the sensor and PCM) TP sensor is damaged or has failed PCM has failed
Trouble Code: P0123TP Sensor Circuit High Input Possible Causes:TP sensor not seated correctly in housing (may be damaged) TP sensor signal is circuit shorted to VREF or system voltage TP sensor ground circuit is open (check the wiring harness) Perform a "sensor sweep test" and monitor for any glitches PCM has failed
Trouble Code: P0125Insufficient Coolant Temperature For Closed Loop Possible Causes:Check the coolant mixture for an incorrect mixture Check the operation of the thermostat (it may be stuck open) ECT sensor (or the CHT sensor) has failed Inspect for low coolant level
Trouble Code: P0126Insufficient Coolant Temperature For Closed Loop Possible Causes:Check the coolant mixture for an incorrect mixture Check the operation of the thermostat (it may be stuck open) ECT sensor (or the CHT sensor) has failed Inspect for low coolant level
Trouble Code: P0131HO2S-11 (Bank 1 Sensor 1) Circuit High Input Possible Causes:HO2S connector pins damaged Loose circuit connections (including harness connectors) PCM has failed
Trouble Code: P0132HO2S-11 (Bank 1 Sensor 1) Circuit High Input Possible Causes:HO2S signal shorted to heater power circuit inside connector HO2S signal circuit shorted to VREF or to system voltage PCM has failed Trouble Code: P0133HO2S-11 Circuit Slow Response (Bank 1, Sensor 1) Possible Causes:Contaminated HO2S* Exhaust leaks Shorted/open wiring Incorrect fueling MAF sensor Deteriorating HO2S Inlet air leaks
Trouble Code: P0135HO2S-11 Heater Circuit (Bank 1, Sensor 1) Possible Causes:Vacuum hose disconnected on exhaust gas recirculation (EGR) system module (ESM) applications Short to VPWR in the harness or HO2S Water in the harness connector Open VPWR circuit Open GND circuit Low battery voltage Corrosion or incorrect harness connections Damaged HO2S heater Trouble Code: P0136HO2S-12 Circuit Malfunction (Bank 1, Sensor 2) Possible Causes:Pinched, shorted, and corroded wiring and pins Crossed sensor wires Exhaust leaks Contaminated or damaged sensor Trouble Code: P0138HO2S-11 (Bank 1 Sensor 1) Circuit High Input Possible Causes:HO2S signal shorted to heater power circuit inside connector HO2S signal circuit shorted to VREF or to system voltage PCM has failed
Trouble Code: P0141HO2S-11 Heater Circuit (Bank 1, Sensor 1) Possible Causes:Vacuum hose disconnected on exhaust gas recirculation (EGR) system module (ESM) applications* Short to VPWR in the harness or HO2S Water in the harness connector Open VPWR circuit Open GND circuit Low battery voltage Corrosion or incorrect harness connections Damaged HO2S heater
Trouble Code: P0152HO2S-21 (Bank 2 Sensor 1) Circuit High Input Possible Causes:* HO2S is contaminated (due to presence of silicone in fuel) HO2S signal tracking (due to oil or moisture in the connector) HO2S signal circuit is open or shorted to VREF PCM has failed
Trouble Code: P0153HO2S-21 (Bank 2 Sensor 1) Circuit Slow Response Possible Causes:HO2S is contaminated (due to presence of silicone in fuel)
Trouble Code: P0171Fuel System Too Lean (Cylinder Bank 1) Possible Causes:Air leaks after the MAF sensor, or leaks in the PCV system Exhaust leaks before or near where the HO2S is mounted Fuel injector(s) restricted or not supplying enough fuel Fuel pump not supplying enough fuel during high fuel demand conditions Leaking EGR gasket, or leaking EGR valve diaphragm MAF sensor dirty (causes PCM to underestimate airflow) Vehicle running out of fuel or engine oil dip stick not seated
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