DTC P0471-00; Exhaust Gas Pressure Sensor Circuit Range/Performance Problem: Notes

DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0471:00	Exhaust gas pressure sensor circuit range/performance problem
DETECTION CONDITION	The condition has continued for 2 s in which difference in exhaust gas pressure measured and manifold absolute pressure is 30 kPa {0.31 kgf/cm² , 4.4 psi} or more, difference in exhaust gas pressure and turbocharger/supercharger boost pressure is 30 kPa {0.31 kgf/cm² , 4.4 psi} or more and difference in barometric pressure and exhaust pressure is 30 kPa {0.31 kgf/cm² , 4.4 psi} or more. MONITORING CONDITIONS Period vehicle being left: 6 h or more Battery voltage: 8 V or more Within 20 s after engine start The following DTCs are not detected: MAP sensor: P0107:00, P0108:00 Boost pressure sensor: P0237:00, P0238:00 Exhaust gas pressure sensor: P0472:00, P0473:00 BARO sensor: P2228:00, P2229:00 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/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Inhibits the EGR control.
POSSIBLE CAUSE	Exhaust gas pressure sensor connector or terminals malfunction Exhaust gas pressure sensor malfunction PCM connector or terminals malfunction PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable