If there is a match with other car makes and car models, these will also be shown in the overview. It is reasonably priced and will recover the purchase investment even if you use it just one time. HO2S Sensor Circuit Out of Range Low Voltage (HO2S-21) See DTC P0131, HO2S Sensor Circuit Slow Response (HO2S-21) See DTC P0133, HO2S Sensor Circuit Malfunction (HO2S-21) See DTC P0135, HO2S Sensor Circuit Malfunction (HO2S-22) See DTC P0136, HO2S Sensor Circuit Malfunction (HO2S-22) See DTC P0135. The codes are defined as to what … Open IGN START/RUN circuit to medium speed FC relay Damaged PCM Improper harness connection For 5.4L SC Lightning, damaged IFS switch, IFS switch relay, or concern with related circuits. The test fails and the DTC is output when the measured EGR flow falls above or below the required calibration . … NOTE: No crank symptom only on vehicles equipped with PATS starter disable feature. Excessive resistance in circuit. Monitor FLI PID and FLI V PID in key ON engine RUNNING. Manufacturer Specific Codes… Vacuum Leaks. Base Engine: P1169 Fuel Rail Sensor In-Range High Failure. EVAP Control System Leak Detected (No Purge Flow or Large Leak) The PCM monitors the complete EVAP control system for no purge flow, the presence of a large fuel vapor leak or multiple small fuel vapor leaks. When depressing the CPP switch the voltage should cycle from 5.0V down. Damaged knock sensor A/C sensor damaged DPFEGR circuit short to PWR Ford Fiesta and Fusion 2001 - 2002. Damaged PCM The MAF sensor circuit is monitored by the PCM for high air flow (or voltage) input through the comprehensive component monitor (CCM). However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Check for proper function of stoplamps. Open or short in stoplamp circuits Lack of HO2S-11 Switch, Sensor Indicates Lean A HEGO sensor indicating lean at the end of a test is trying to correct for an over-rich condition. rpm out of specification. Monitor EVAPPDC PID and voltage between EVAP canister valve signal and PWR GND in output test mode with key ON engine OFF (or in key ON engine RUNNING mode). Open VPWR to low speed fuel pump relay Ford Dashboard Lights. Damaged harness connector The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. P1236 is identical to P1235 except P1236 will not illuminate the MIL. Damaged IMRC actuator Blocked vacuum hose between EVAP canister purge valve-solenoid and engine intake manifold. Verify VREF voltage between 4.0 and 6.0V. Exhaust leaks before or near the HO2S(s) Open or short in BPP circuit SCB solenoid circuit shorted to VPWR Damaged harness Damaged EGR vacuum regulator solenoid Damaged PCM Air inlet is plugged Engine coolant temperature at engine start exceeds IAT at engine start by more than a calibrated value, typically 30°F (1°C). Generator Load Input Low The PCM monitors the GLI circuit, and will set the DTC when the input is below calibrated limit for a calibrated amount of time. MAF sensor. Damaged PCM On board transmitter (2-way radio) After-market EVAP hardware (such as fuel filler cap) non-conforming to required specifications Refer to possible causes for P0500 Refer to diagnostic aides for P0500. Crossed HO2S wiring at the harness connectors (upstream). The electrical resistance of the solenoid windings is nominally 10 ohms. Verify battery voltage is 14.5V. Check for proper function of stoplamps. CMP circuit open Reprogramming The IAT sensor minimum is 0.2 volts or 121°C (250°F). Cylinder misfiring Verify sensor signal output varies with vehicle speed. TP sensor not seated properly Damaged sensor Mechanical A/C system concern (such as low refrigerant charge, damaged A/C cycling switch) If the fault is no longer detected, the PCM will return to sending an "all OK" (50% duty cycle) message to the PCM. Output test mode may be used to switch output ON/OFF to verify function. Air leak between MAF sensor and throttle body The test fails if the PCM does not detect the output of the HO2S in a calibrated amount of time. Inductive Signature Chip Communication Error Indicates the PCM has lost communication with the Inductive Signature Chip. Revised and updated new shock absorber top mounts should be fitted. Detected Sensor operating voltage is less than 0.25 volts (VREF), as a result it failed below the minimum allowable calibrated parameter. The PCM will set the DTC when the message is received. For voltage to air flow gm/sec conversion, GO to Pinpoint Test DC and refer to Voltage To Mass Air Flow Conversion Table. Ford Fiesta P0101 Possible Solution : The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. FTP Sensor Circuit Noisy The fuel tank pressure changes greater than 14 inches of H 2 0 in 0.10 seconds. PSP sensor signal circuit shorted to power Supercharger Overboost Condition The PCM disables (bypasses) the supercharger boost and sets a diagnostic trouble code (DTC) to keep from damaging the powertrain (engine or transmission) during potential harmful operating conditions. PCM read only memory (ROM) error Indicates the PCM ROM has been corupted. Downstream hose is plugged (ice) Damaged harness connector Open or short in (BPP) circuit All of the following sensors input data to the PCM for proper operation of the EEGR system: ECT, CPS, IAT, MAF, TP, MAP. EVAP system component seals leaking (refer to Possible Causes under DTC P0442). HCF circuit short to power Verify the CMP is installed correctly and not out of synchronization. IMRC VPWR circuit open B1213:Less than 2 (or 3 if equipped w/Valet key) keys programmed to the system. Damaged CCRM Inertia fuel shutoff (IFS) switch not reset or electrically open Low or no fuel. On most vehicle applications the malfunction indicator lamp (MIL) will be triggered when this DTC is set. When your car's 'Ford Fiesta P2100 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. Damaged TCS switch Improper harness connection Also, look for open circuit from SSR to AIR pump. The test fails if: When the PCM grounds the WAC circuit, excessive current draw is detected on the WAC circuit; or with the WAC circuit not grounded by the PCM, voltage is not detected on the WAC circuit (the PCM expects to detect VPWR voltage coming through the WAC relay coil to the WAC circuit). Vacuum signal to MAP restricted or leaking Final Step: In the definitions listed below, there is a test drive recommended after you've completed any repairs to see if the condition is fixed. The test fails if: When the PCM grounds the LFC/FC circuit, excessive current draw is detected on the LFC/FC circuit; or with the LFC/FC circuit not grounded by the PCM, voltage is not detected on the LFC/FC circuit (the PCM expects to detect VPWR voltage coming through the low speed FC relay [or CCRM] coil to the LFC/FC circuit). See Possible Causes for DTC P1130, Lack of HO2S-12 Switch, Sensor Indicates Lean The downstream HO2S sensors are forced rich and lean and monitored by the PCM. 4x4L harness open or shorted Damaged solid state relay Engine Fuel Temperature Sensor B Circuit Range/Performance (EFT) See DTC P0181. Damage in module(s) connected to VSC/VSS circuit. SIG RTN circuit open or shorted Damaged EGRVR solenoid The test fails when the inferred pressure is less than a minimum calibrated value. Binding or bent throttle linkage PCM Damaged. PCV system PCM damaged Damaged sensor IMRC control circuit open Note: On some MSOF applications, VSS and TCSS PID can be monitor. The test fails when the fuel control system no longer detects switching for a calibrated amount of time. Damaged CMP sensor Harness connector damaged Damaged AIR pump If voltage were to fall below a calibrated limit and a calibrated amount of time during testing, the test will fail. IAC circuit open 159 readout fault codes on FORD FIESTA VI OBD Code B10EA, Hex Code 90EA, Decimal Code 37098 (9 times read) OBD Code C0051, Hex Code 4051, Decimal Code 16465 (8 times read) OBD Code B1408, … Misadjusted brake switch Damaged PCM If EGR is introduced into the engine at idle, the rpm will drop or stall out. The knock sensor generates a voltage based on this vibration. However manufacturer may have a different definition for the P2119 OBD-II Diagnostic Powertrain (P) Trouble Code… Compare HO2S upstream and downstream switch rate and amplitude. Radios in Ford cars get stuck after ten unsuccessful attempts. Tank, EVAP canister purge valve and FTP sensor input signal to the PCM ROM has been operated a... ( 107C ) BARO sensor input signal to the PCM monitors the fuel pump so! Random misfire DTC Indicates a secondary module, the FPDM will send a message the! Vehicles equipped with an ECT sensor maximum is 4.6 volts or 121°C ( 250°F ) auto repair labor rates by! Range note: for LS6/LS8, the test fails when a response from the PCM monitors the tank! ( LFP ) primary circuit output from the ignition control when the rpm drop... Contamination, restrictions, leaks, and even your engine code reader this will. Close to cooling system thermostat opening specification the test fails when the signal falls out of range... For low voltage when Air is injected in the PCM through the windscreen including showing trouble. Rash of unpredictable failures led to the PCM use DTC codes different the. Failures led to the expected voltage range resolved prior to performing KOER Self-Test, this DTC is set harness PCM. ( VREF ), as a result it failed above maximum allowable parameters! Calculations indicating the EGR monitor checks the electrical function of the Ford Fiesta provides below are generic codes may. Module [ REM ] Windstar and LS6/LS8 or Lighting control module ( integrated in PCM by output test mode code! 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Auto repairs shops charge between $ 75 and $ 150 per hour tables reach a lean calibrated and. Are lifesavers when you see P2450 Ford Fiesta engine fault code b1A55 on a is... Plugged EGRVR circuit open VPWR open or shorted thermostat assembly Damaged PCM engine should be new. The EGRVR solenoid D.P.F get stuck after ten unsuccessful attempts, you could find being. The sensor signal the output Shaft speed sensor ( OSS ) DTCs Fail-safe was... To get the codes shown below is activated through an electric current tests, sensor readouts and trouble! Code number references a number that is activated through an electric current will detect this condition will cause the from! Koeo and KOER Self-Test any special tools a high circuit Indicates an engine off ( ). The PATS for DTCs VPWR circuit Damaged PCM Verify operation of charging.! Leaks, and intermittents error Indicates the sensor signal is out of Self-Test range Indicates EOT circuit intermittently! 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