CHECK ENGINE Light Diagnostic Mode

WARNING: This page is about a different car, the 1995 Dodge Ram Wagon and 1995 Dodge Ram Van. However, it is still accessible from the selected car via links, so may be relevant.

With key inserted in ignition switch, cycle ignition switch to ON position 3 times. On third cycle, leave ignition switch in ON position. Record 2-digit Diagnostic Trouble Code (DTC) as displayed by flashing CHECK ENGINE light.
For example, Code 34 is displayed as a series of 3 flashes in rapid succession, followed by a 4-second pause, then 4 flashes in rapid succession. After a slightly longer pause, other stored codes are displayed in numerical order.
When CHECK ENGINE light begins to flash fault codes, it cannot be stopped. If you lose count, it will be necessary to start over. Code 55 indicates end of fault code display.
Refer to DIAGNOSTIC TROUBLE CODE (DTC) table to translate trouble code number to a system fault description (DRB display). Once trouble area is identified, refer to TEST SC-1A to diagnose problem.
NOTE: If fault code exists that is not related to cruise control system, see See INTERMITTENTS section in appropriate G - TESTS W/ CODES article in ENGINE PERFORMANCE section:
- G - TESTS W/CODES - 3.9L
- G - TESTS W/CODES - 5.2L GASOLINE
- G - TESTS W/CODES - 5.9L

NOTE: While using DRB scan tester, if an error is made or technician is unaware of correct procedures, enter F1 (Help) or HOW TO USE DRB from various menus.