07-09-2005, 11:10 PM
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Registered User
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Join Date: Feb 2005
Location: Vancouver, WA, USA
Posts: 48
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Quote:
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Originally Posted by Arthur Dalton
OBD11 Codes Po520, 0521, 0522, o523 are all oil pressure/sensor system diagnostic feeback to ECU system monitoring, looking for faults.
If one scans the system, these faults monitor sw circuit, system voltages ,both high/low, and sensor/gauge range through the processor and tat will tell you if the sensor circuit is in range. [ but , the comparison test with a mechanical gauge is best]
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For what it's worth I checked ALLDATADIY.com and the above codes are not listed for my 97 S500. The list stops at P0509 and starts up again at P0561.
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Paul Hansen
1997 S500 (100,000mi)
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