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Damaged EFT sensor. If during key ON engine running the air flow (or voltage) changes below a minimum calibrated limit, the test fails. A FRP PID value during KOER or KOEO less than 0.3 volts for gasoline or 0.5 volts for natural gas vehicles (NG) would indicate a hard fault. Switching Bank 1 Sensor 2 P1140 - Heated Oxygen Sensor (HO2S) Transition Time Ratio Bank 1 Sensor 2 P1141 - Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2

The test fails when the PCM does not receive a valid IDM pulse signal from the ignition module (integrated in PCM). TalkFord Gold Members Don't See Adverts! P0181 Error Description Engine Fuel Temperature Sensor A Circuit Range/ Performance (EFT) The comprehensive component monitor (CCM) monitors the EFT Temperature for acceptable operating temperature. Open or shorted fuel pump (FP) circuit Open VPWR circuit to fuel pump relay Damaged fuel pump relay Damaged PCM When the FPF PID reads YES, a fault is currently present.

The test fails when the inferred pressure is less than a minimum calibrated value. The test fails if the PCM stops receiving the duty cycle signal. We use data about you for a number of purposes explained in the links below. The DTCs can be retrieved from the restraints control module (RCM) with a diagnostic tool via the data link connector (DLC).

We use data about you for a number of purposes explained in the links below. P0401 Error Description EGR Flow Insufficient Detected The EGR system is monitored during steady state driving conditions while the EGR is commanded on. Brake torque (brake on and throttle at wide open) Transmission oil temperature (TOT) exceeds calibrated threshold Engine over temperature Ignition misfire exceeds calibrated threshold Knock sensor (KS) failure or knock detected Damage drive mechanism for VSS or TCSS.

Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC. Verify ignition and charging system are functioning correctly. Damaged VSS or TCSS. The IAT sensor minimum is 0.2 volts or 121°C (250°F).

If the PCM does not see this change from high to low the DTC is set. Past Mondeos - 2001 MK3 TDDi Ghia Estate, 2000 MK2 2.0 Zetec, 2000 MK2 1.8 TD, 1997 ST24, 1995 MK1 2.0 GLX Back to top #6 gezzx7r gezzx7r MEG Corporal Members Subscribe Today To Hide This Advert! Fuel filler cap missing, loose or cross-threaded.

P0503 Error Description Vehicle Speed Sensor (VSS) Intermittent Indicates poor or noisy VSS performance. P0320 Error Description Ignition Engine Speed Input Circuit Malfunction The ignition engine speed sensor input signal to PCM is continuously monitored. EGR Vacuum Regulator circuit malfunctionP1409? P1128 Error Description Upstream Oxygen Sensors Swapped from Bank to Bank (HO2S-11-21) The HEGO monitor checks and determines if the HO2S signal response for a fuel shift corresponds to the correct

The FPM circuit is wired to a pull-up voltage inside the PCM. P1000 Error Description Monitor Testing Not Complete The on board diagnostic II (OBD II) monitors are performed during the OBD II Drive Cycle. Signal Out-Of-Range Low P1118 - Engine Coolant Temp. Loop Resistance High B1116 - Passenger Deploy.

Corrosion or poor mating terminals and wiring Damaged HO2S heater. The test fails when the signal is shorted to power. Short to GND in VSS harness circuit. With Drive Ratio P1817 - TFP Valve Position Sw. - Reverse With Drive Ratio P1818 - TFP Valve Position Sw. - Drive Without Drive Ratio P1819 - Internal Mode Switch -

The test fails when the fuel injector does not operate electrically even though the harness assembly and fuel injectors test satisfactorily. This noise distorts the input to the PCM. Sens. For lean and rich DTCs: Fuel system Excessive fuel pressure.

EEGR valve stuck open or closed Connector to EEGR not seated EEGR motor windings shorted or open circuited No power to EEGR Harness open or shorted to power or ground Vacuum Past Mondeos - 2001 MK3 TDDi Ghia Estate, 2000 MK2 2.0 Zetec, 2000 MK2 1.8 TD, 1997 ST24, 1995 MK1 2.0 GLX Back to top #9 drjotty drjotty Megger Members 65 If the sensor is thought to be switching from 0 volts to -1 volts during testing, the PCM will use this input and remain in fuel control. The connector may have a removable cover. 2.

Air leak between MAF sensor and throttle body TP sensor not seated properly Damaged TP sensor Damaged MAF sensor Drive vehicle and exercise throttle and TP sensor in all gears. Typical IAT2 temperature should be greater than IAT1. Poor continuity through the MAF sensor connectors Poor continuity through the MAF sensor harness Intermittent open or short inside the MAF sensor. Low ambient temperature operation.

Fuel) Gas Mass Sensor Circuit High Frequency P1211 - Mass Air Flow Circuit Intermittent High P1212 - Mass Air Flow Circuit Intermittent Low P1214 - Injection Pump Timing Offset P1215 - P0720 Error Description Insufficient input from Output Shaft Speed sensor The output shaft speed sensor inputs a signal to the PCM, based on the speed of the output shaft of the DLS component speakers,JL audio sub,Genesis amps, pioneer flip screen dvd H/U, 7" roof screen. After market add-on.

P0121 Error Description Throttle Position (TP) Circuit Performance Problem The TP sensor circuit is monitored by the PCM for a non closed throttle position at idle. Today, 10:10 PM GlynGhas started Residuals in Focus Mk3 General Discussion. If you are unsure of any abbreviations, check out the acronym list by clicking on the link at the left.