CAR OBD CODES
OBD/DTC Search, e.g.P0444
CAR OBD CODES P0444
P0444 OBD Code Definition:
P0444 Evaporative Emission Control System Purge Control Valve Circuit Open
P0444 OBD Code Description:
OBD2 Code P0444 Definition:
The optical sensor 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.
Symptoms
Possible sumptoms of P0444
– Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
Possible causes of P0444
– 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: Some high resolution pulses are missing from the optical sensor to the PCM
Possible Solutions
– If damage, repair optical sensor circuit – Replaced optical sensor – Replaced PCM or ECM
Note: The information on the P0444 error code is purely informative, if you need more useful information, please consult your technician.
B2320 B1652 B2727 B1D26 B129F B2692 B1625 B2991 B2637 B0100 B2012 B1B62 B009D B139A B11C1 OBDII Chassis Codes
C1283 C1958 C0241 C006A C1238 C1205 C1106 C0210 C1115 C1495 C1015 C1915 C1898 C1847 C2800 OBDII Network Codes
U2471 U1130 U2611 U0431 U0311 U0199 U059B U0019 U0261 U1253 U2013 U2062 U0477 U1199 U1145 OBDII Powertrain Codes
P0206 P024F P0621 P2223 P120E P0A63 P0435 P0007 P0A32 P0499 P0006 P0B3C P003E P0AD5 P1315