1999 Volvo P0236&P0237 Fault Codes

1 ANSWERS

1. Ali Abdullah
   

   Hi There, Hopefully you have a S80 PO236 boost pressure sensor. PO237 BOOST PRESSURE SENSOR Condition If the control module receives a signal from the boost pressure sensor which is lower than 0.2 V (low signal) or higher than 4.85 V (high signal) it is interpreted as a fault and ECM-1600 is stored. Same as PO237 Condition Boost pressure control runs in an open-loop, in other words set duty cycles are generated regardless of boost pressure. Possible source Signal too high: contact resistance in terminals short-circuit to supply voltage in the signal cable open-circuit in signal cable defective boost pressure sensor Signal too low: short-circuit to ground in the signal cable defective boost pressure sensor Condition, none Hope it helps

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