Low fuel pressure (NG only) Typical vehicle symptoms are: Start/Stall or Crank/No Start. Empty fuel tank Damaged BPP switch Insufficient fuel filler cap installation CPP circuit open in the SIGRTN Inertia fuel shutoff (IFS) switch needs to be reset They are presented somewhat in order from most to least likely to be causing the code: Bad Spark Plugs– Spark plugs are one of the most common causes of P0304. A FRP PID value greater than 896 kpa (130 psi) indicates a failure, Fuel Rail Pressure (FRP) Sensor in Range But High The comprehensive component monitor (CCM) monitors the FRP pressure for acceptable fuel pressure. Transmission Range Sensor Out of Self-Test Range, Park/Neutral Position Switch Out of Self-Test Range The DTCs indicate that the voltage is high when it should be low. Short to VPWR in harness or HO2S After-market EVAP hardware (such as fuel filler cap) non-conforming to required specifications See Possible Causes for DTC P0171. If a concern is present that results in frequent A/C clutch cycling, damage could occur if the torque converter was cycled at these intervals. PCM damaged CPP circuit short to PWR Low ambient temperature operation. LED-indicator of PATS status. Engine RPM/Vehicle Speed Limiter Indicates the vehicle has been operated in a manner which caused the engine or vehicle to exceed a calibration limit. VPWR to IAC solenoid open VREF open to TP sensor U0401 Ford Fiesta code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. Damaged catalytic converter Knock Sensor 1 Circuit Range/ Performance (Bank 1) The knock sensor detects vibrations upon increase and decrease in engine rpm. The DTC indicates the vehicle has been operated in a manner which caused the engine or vehicle speed to exceed a calibrated limit. Damaged PCM SIG RTN circuit open Leaking gasket EGRVR circuit short to VPWR or GND Ford Fiesta P1602 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,000. PSP switch/shorting bar damaged The auto repair labor rates vary widely across the country, and even within … Damaged PCM DPF EGR circuit open Base engine The DTC indicates the PSP sensor is out of Self-Test range. Throttle Position (TP) Circuit Performance Problem The TP sensor circuit is monitored by the PCM for a non closed throttle position at idle. Contaminated fuel vapor elbow on EVAP canister Verify battery is at proper charge. Please tell me how to solve the problem. Also for Escort/Tracer and Mustang: Diagnostics and repair for the VCT unit are located in the Workshop Manual. Open or shorted THTRC circuit Verify VREF voltage between 4.0 and 6.0V. Permanent DTC Overview Ford Motor Company February 2017 Version 1.0 Printed Copies Uncontrolled Page | 1 Permanent Diagnostic Trouble Codes (DTCs) A Permanent Diagnostic Trouble Code (DTC) is … Damaged PCM Please tell me how to solve the problem. Poor continuity through the MAF sensor harness However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. Foreign vehicles may also use DTC codes different from the generic DTC codes. Tire/Axle Ratio Out Of Acceptable Range This Diagnostic Trouble Code (DTC) indicates the tire and axle information contained in Vehicle ID block (VID) does not match vehicle hardware. Short to VPWR in FF sensor battery ground circuit Ignition LED Description; OFF: ... in other case trouble codes will appear fault code … Damaged fuel pump relay Mechanical A/C system concern (such as low refrigerant charge, damaged A/C cycling switch) When the check engine light comes Ford Fiesta B2479 code on the first you should check is the gas cap. Open B+ circuit to constant control relay module (CCRM) pin 11 Improperly seated engine oil dipstick. Generator circuit short to GND Excessive engine rpm in Neutral 3. Damaged PCM Connector to EEGR not seated Or during Key On Engine Running (KOER) Self -Test, the BPP signal did not cycle high and low. P1158 Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank 2 - Read Our Article on Oxygen Sensor Codes For Help With This Ford Check Engine Light Code. Fuel Pump Secondary Circuit High NOTE: For natural gas applications, the following description applies to the fuel shutoff valve monitor (FSVM) and the fuel shutoff valve power (FSV PWR) circuits. Low battery voltage. The test fails when the inferred pressure is less than a minimum calibrated value. The test fails when the adaptive fuel tables reach a rich calibrated limit. However there are external items that can cause this DTC. EVAP canister purge valve circuit shorted to GND Lincoln Sentinel; Chrysler New Yorker; Gaz 210; U Codes: List of all Network codes. Engine Fuel Temperature Sensor B Circuit Low Input (EFT). The test fails when the adaptive fuel tables reach a lean calibrated limit. Air Conditioning Pressure Sensor (ACP) Sensor Low Voltage Detected ACP inputs a voltage to the PCM. For LS6/LS8, circuits associated with the Fuel Pump relay Intake Air Temperature (IAT) Sensor Intermittent Indicates IAT sensor signal was intermittent during the comprehensive component monitor. Damaged IAC solenoid Engine operating in high rpm range, due to improper gear selection. If the PCM does not see low voltage when the switch is on a DTC will set. most late model ford fiestas are capable of displaying fault codes directly on the display screen. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Crossed HO2S harness connectors (downstream). TP sensor not seated properly Damaged OSS connector Engine Coolant Over-Temperature Condition Indicates an engine overheat condition was detected by the cylinder head temperature (CHT) sensor. Improper vacuum hose connection PID Data Monitor INJ1F-INJ12F fault flags = YES. Crossed HO2S signal/signal return wiring. Damaged sensor A DPFEGR PID reading that is greater at idle than during key ON and engine OFF by 0.5 volt or a rough engine idle, may indicate a hard fault. Remember, these are manufacturer specific codes only. 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