DTC P0471:00 [SKYACTIV-D 2.2]

id0102s4212400

DTC P0471:00	Exhaust gas pressure sensor No.1 circuit range/performance problem
DETECTION CONDITION	•  When any of the following conditions is met: ―  With the following conditions met, a condition has continued for 1.8 s within 4 to 6 s after the ignition was switched OFF in which difference between the barometric pressure and exhaust gas pressure is 50 kPa {0.51 kgf/cm2, 7.3 psi} or more and difference between the MAP sensor No.1 output value (PCM PID TCA_CINP) and exhaust gas pressure is 50 kPa {0.51 kgf/cm2, 7.3 psi} or more and difference between the intake air pressure and exhaust gas pressure is 50 kPa {0.51 kgf/cm2, 7.3 psi} or more. •  Battery voltage: 10 V or more ―  The PCM detects a condition two times in which difference between the maximum exhaust gas pressure when the following condition A is met and the minimum exhaust gas pressure when the following condition B is met is less than 5.85 kPa {0.0597 kgf/cm2, 0.848 psi}. Condition A: the following conditions continue for 0.32 s or more •  Battery voltage: 8—20 V •  0.5 s have elapsed after the ignition was switched ON (engine off or on) •  Engine coolant temperature: 30 °C {86 °F} or more •  Intake air temperature: −10 °C {14 °F} or more •  Barometric pressure: 65—120 kPa {0.67—1.22 kgf/cm2, 9.5—17.4 psi} •  Change in fuel injection amount: Less than 4 mm3/st within 0.032 s •  Vehicle speed: above 15 km/h {9.3 mph} •  Target intake air pressure is 150 kPa {1.53 kgf/cm2, 21.8 psi} or more for 1.5 s or more •  Difference in fuel injection amount before and after correction is less than 5 mm3/st •  VSS malfunction DTC P0500:00 not detected •  Exhaust gas pressure sensor No.1 malfunction DTC P0472:00, P0473:00 not detected •  Intake shutter valve position sensor malfunction DTC P0122:00, P0123:00 not detected •  Intake shutter valve malfunction DTC P1589:00, P2101:00, P2118:00 not detected •  Turbocharger solenoid valve malfunction DTC P0047:00, P0048:00 not detected Condition B: the following conditions continue for 1.5 s or more •  Battery voltage: 8—20 V •  0.5 s have elapsed after the ignition was switched ON (engine off or on) •  Engine coolant temperature: 30 °C {86 °F} or more •  Intake air temperature: −7 °C {19 °F} or more •  Barometric pressure: 65—120 kPa {0.67—1.22 kgf/cm2, 9.5—17.4 psi} •  Change in fuel injection amount: Less than 4 mm3/st within 0.032 s •  Engine speed: 1,200 rpm or less •  Idle speed control: Being performed •  Fuel injection amount: 0—25 mm3/st •  Fuel injection amount learning is continued for 2 s or more •  VSS malfunction DTC P0500:00 not detected •  Exhaust gas pressure sensor No.1 malfunction DTC P0472:00, P0473:00 not detected •  Intake shutter valve position sensor malfunction DTC P0122:00, P0123:00 not detected •  Intake shutter valve malfunction DTC P1589:00, P2101:00, P2118:00 not detected •  Turbocharger solenoid valve malfunction DTC P0047:00, P0048:00 not detected •  Any of the following conditions (a), (b), (c) is met: a.  Shift lever position is neutral (MTX)/Selector lever position is P or N position (ATX) b.  CPP switch: OFF (MTX) c.  Vehicle speed: 0 km/h {0 mph} Diagnostic support note •  This is a continuous monitor (CCM). •  The check engine light illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. •  PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. •  FREEZE FRAME DATA (Mode 2)/Snapshot data is available. •  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	•  Inhibits the EGR control. •  Inhibits engine-stop by operating the i-stop function. •  PCM restricts engine-transaxle integration control.
POSSIBLE CAUSE	•  Exhaust gas pressure sensor No.1 connector or terminals malfunction •  Exhaust gas pressure sensor No.1 malfunction •  PCM connector or terminals malfunction •  PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

Diagnostic Procedure