Diagnostic Aids

Check all connections, especially those at transmission pass-thru connector. If code is intermittent, see INTERMITTENTS in appropriate TESTS W/O CODES article in this section. See below.

• TESTS W/O CODES - GASOLINE
• TESTS W/O CODES - 6.5L DIESEL

Fig 1: Code 81 Schematic (Diesel) Transmission 2-3 Error

Fig 2: Code 81 Schematic (Gasoline) Transmission 2-3 Error

Fig 3: Code 81 Flow Chart Transmission 2-3 Error