EXHAUST GAS PRESSURE SENSOR [SKYACTIV-D 2.2]

id0140z7256700

Exhaust Gas Pressure Sensor No.1

Purpose/Function

•  Detects the exhaust gas pressure exhausted from the cylinder as basic information for mainly EGR control and boost control.

•  Detects the exhaust gas pressure exhausted from the cylinder and inputs to the PCM as an exhaust gas pressure signal.

Construction

•  Exhaust gas pressure sensor No.1 is installed to the cylinder head cover with the bracket.

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•  A semiconductor strain gauge has been adopted to the exhaust gas pressure sensor No.1 as the detecting element for detecting the exhaust gas pressure exhausted from the cylinder.

Operation

•  Inputs the signal, which fluctuates according to the exhaust gas pressure exhausted from the cylinder, to the PCM.

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Exhaust gas pressure sensor No.1 characteristic

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Fail-safe

DTC No.	Fail-safe function
P0471:00 P0472:00 P0473:00	•  PCM restricts engine torque. •  Inhibits the EGR control. •  PCM restricts engine-transaxle integration control. (ATX)

Exhaust Gas Pressure Sensor No.2

Purpose/Function

•  Detects the difference in pressure between exhaust gas pressure before and after passing the diesel particulate filter as basic information for mainly diesel particulate filter regeneration control.

•  Detects the difference in pressure between exhaust gas pressure before and after passing the diesel particulate filter and inputs to the PCM as an exhaust gas pressure signal.

Construction

•  Installed on the air hose bracket.

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•  A piezoelectric element has been adopted to the exhaust gas pressure sensor No.2 as the detecting element for detecting the difference in pressure between exhaust gas pressure before and after passing the diesel particulate filter.

Operation

•  Inputs the signal, which fluctuates according to the difference in pressure between exhaust gas pressure before and after passing the diesel particulate filter, to the PCM.

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Exhaust gas pressure sensor No.2 characteristic

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Fail-safe

DTC No.	Fail-safe function
P244A:00 P2454:00 P2455:00 P2456:00	•  PCM restricts engine torque. •  Inhibits the auto DPF regeneration control. •  Inhibits the compulsory DPF regeneration control. •  Inhibits the EGR control. •  Inhibits engine-stop by operating the i-stop function.