Possible causes
- Boost pressure sensor harness is open or shorted
- Boost pressure sensor circuit poor electrical connection
- Faulty boost pressure sensor
- Faulty Turbo/Super Charger
- Engine over temperature
- Ignition misfire exceeds the calibrated threshold
- Faulty Knock sensor (KS)
What does this mean?
When is the code detected?
This diagnostic trouble code (DTC) P0237 will set if the boost pressure sensor signal is below the predicted range.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0237 Description
The boost pressure sensor responds to pressure changes in the intake manifold. This pressure is created by the turbocharger and changes with accelerator pedal position (APP) and engine speed. The engine control module (ECM) uses this information to assist in diagnosis of the barometric pressure (BARO) sensor and to provide engine overboost protection. The boost pressure sensor has a 5-volt reference circuit, a low reference circuit, and a signal circuit. The engine control module (ECM) supplies 5 volts to the boost pressure sensor on the 5-volt reference 2 circuit, and provides a ground on a low reference circuit. The boost pressure sensor provides a signal to the ECM on a signal circuit relative to the pressure changes. The ECM monitors the boost pressure sensor signal for voltage outside of the normal range. The ECM calculates a predicted value for the boost pressure sensor. The ECM then compares the predicted value to the actual signal.
Read more: http://www.autocodes.com/p0237.html#ixzz48rL6TpeY
What make and model please.
SOURCE: 2000 Volvo S80 T6 scanner code P0237
Actually I believe the code has something to do with fuel.. the P0237 means Powertrain (P), the 0 means its a common code throughout all vehicles not manufactur specific and the 2 means Fuel , the 37 is the specific code and says the problem usually that i dont know off hand but if theres like a lack of power or you know this is creating a misfire i would start out by checkin fuel pressure [pressure, pump, rails] and then fuel delievery [injectors].
hope that gets you started or an idea maybe
ps a turbo is something you usually install yourself so the car shouldnt be equipped with a turbo sensor...i dont think that exists
SOURCE: Check Engine Light
Hello engelhard58
I have attached a link that can give you some of the reasons why your getting that code.I hope you able to get your answer out of that.
Mean of the code=P0420 Catalyst System Efficiency Below Threshold.
Link to site
SOURCE: I have a 2001 dodge with a 5.9 diesel engine auto
before doing that remove air filter and see how it does first if it runs better change the filter i run into this alot in arizona with all the dust
SOURCE: I have a 2006 Sentra
No you did not do any thing wrong P0 are generic codes P2 is the enhance code, by the way P0138 is bank 1 sensor 2 oxygen sensor circuit high, what causing this code its either internally disconnected or externally disconnected, remeber this is the oxygen sensor that monitor the catalytic convertor so this sensor is after the catalytic, make sure it is connected
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