Main code 64 indicates the ECU has detected a voltage signal from the retarder request modulation sensor (consisting of a...

Main code 65 indicates the engine horsepower/governor speed rating is too high. This code is set only when computer-controlled engines...

Main code 66 indicates the ECU is expecting to get its throttle position sensor (TPS) signal across a serial communication...

Main code 69 indicates the ECU has malfunctioned. ECU, open driver, A solenoid circuit To assist in tracking ECU reliability,...

Main code 69 indicates the ECU has malfunctioned. ECU, open driver, B solenoid circuit To assist in tracking ECU reliability,...

Main code 69 indicates the ECU has malfunctioned. ECU, open driver, C solenoid circuit To assist in tracking ECU reliability,...