How to Check a Trouble Code P0237?

How to Check a Trouble Code P0237?

Model: Hyundai Auto

Gasoline : Diesel

 

How to  Check a Trouble Code P0237?

P0237 Boost Press. Sensor - Circuit Low Input

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Study Guide and Component Location Study Guide and General Description Study Boost Pressure Sensor(BPS) is installed in intake manifold and senses the pressure of air inside of intake manifold which is compressed by turbo charager. Study Measuring mass air flow accurately with the information of intake mainfold pressure, mass air flow and intake air temperature, ECM performs actuating correction of EGR and VGT. Study When excessive intake manifold pressure is detected, engine power generation is limited to protect engine because too highly compressed pressure due to turbo charger may harm engine. Study Guide and DTC Description Study P0237 is set when the voltage below 0.2V - mimimum output voltage of BPS - is detected for more than 2 sec.. Study This code is due to open in power circuit or short to ground in signal circuit. Study Guide and DTC Detecting Condition Item Detecting Condition Possible Cause   DTC Strategy Study • Voltage monitoring • BPS circuit • BPS component Study Enable Conditions • IG KEY "ON" Study Threshold Value • Output signal below minimum value(below 200mV) Study Diagnostic Time • 2 sec. Study Fail Safe Fuel cut NO • Boost pressure is fixed at 1000 hpa. EGR Off YES Fuel Limit YES Check Lamp OFF Specification Pressure [Kpa] 20 100 190 250 Outpur voltage [V] 0.4±0.077 1.878±0.063 3.541±0.063 4.650±0.077 Diagnostic Circuit Diagram Signal Waveform & Data Fig1). This is the waveform of BPS as accelerating from idle state. Signal voltage rises as accelerating. Study Guide , Study Guide , Study Guide , Study Guide , Study Guide , Study Guide , Study Guide