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HOW TO READ DIAGNOSTIC TROUBLE CODES. 1. Locate the 16-pin OBD II diagnostic connector (usually under the dash near the steering column). Note: On some vehicles, it may be necessary to remove a knee bolster panel
What does this mean?OBD Code
P0371 refers to the optical sensor which
provides a high resolution signal to the Powertrain Control Module (PCM) by
counting pulses on the sensor disk located in the injection pump. The high
resolution is one of the most important inputs by the PCM for fuel control and
timing. This test monitors the number of high resolution pulses which have been
missed (not detected). It's based on a comparison between the number of pulses
that were detected since the last pump cam pulse and the number of the pulses
that should have occurred. There are approximately 64 high resolution pulses for
every cam pulse.
SymptomsPossible sumptoms of
OBD code P0371 - Engine Light ON (or
Service Engine Soon Warning Light)
CausesPossible causes of OBD
code P0371 -
Open or short in the optical sensor circuit - Optical sensor connector - Damaged
optical sensor - Damaged PCM or ECM The Error code is generally activated on
detection of the following conditions: There are too many high resolution pulses
from the optical sensor to the PCM
Possible Solutions- If damage, repair
optical sensor circuit - Replaced optical sensor - Replaced PCM or ECM
In the old OBD1 system the blinking of 5 5 is telling you that it's the end of the stored codes... you have a 96, you should have an OBD2 port someplace on your van. Go to an auto parts store and have them read your codes for free. Then post that code here.
here r your trouble code meanings: 1) p0123-throttle position sensor circuit, high input. 2)p0117-engine coolant temperature circuit, low input. 3)p0118-engine coolant temperature ciurcuit , high input.