cnat access computer to retrieve error codes

[rwms498]

hi. i have a 2006 liberty 3.7 l engine. mechanic retrieved error code a month ago, but forgot code and didnt write it down, so when he tried to retrieve code the second time he couldnt get into the system. he has used two seperate professional quality code reader "thingys" to try to access....has anyone run into a similar situation? i would greatly appreciate any help. thanks.

 

[wheeee32]

I'm gonna go ahead and ask if you already tried the turn-key method to see if codes pop up on the odometer display.

 

[tjkj2002]

Okay there could be a few issues.The fuse for the OBDII connector is blown and not allowing the comunication or the codes are gone.

 

[hilltopmike]

Cranks no start, no spark, no injector pulse. No bus is displayed on odometer, no scan tool communication.

Average Reported Mileage:
92791

Tests/Procedures:

1. Check the 5 volt reference wire on the Orange wire at the Camshaft Position (CMP) sensor.

2. If not 5 volts, unplug the CMP sensor, cycle the key off and on and recheck for 5 volts.

3. If the 5 volts is present with the CMP sensor unplugged, the CMP sensor is shorted.