Quote:
Originally Posted by Luisitto
To access codes with out special tools turn ignition switch from off to on [do not crank]
3 times and leave in the on position the check engine warning lamp will flash out 2 did
git codes.
Normally starting with code 12 and 55[end of report] with the
malfunction code[s] in between.
Do not disconnect the battery as code data will be lost.
If no codes are present suspect a failing fuel pump.
If you have codes besides the 12 and 55 list them on this site and someone will tell you what they mean
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::Code 42::
DRB Scan Tool Display:
-Auto Shutdown Relay Ctrl Circuit
-No ASD Relay Output Voltage at PCM
-Fuel Pump Relay Control Circuit
-Fuel Level Sending Unit Volts Too High (or Too Low)
-Fuel Level Unit No Change Over Miles
Description of Diagnostic Trouble Code:
-An open or shorted condition detected in the auto shutdown relay circuit
-An open condition detected in the ASD relay output circuit
-An open or shorted condition detected in the fuel pump relay control circuit
-Shorted (or open) circuit between PCM and fuel gauge sending unit
-No movement of fuel level sender detected