SLIDE 9G8634 - Caterpillar

The following table lists all the J1939 diagnostic trouble codes for the engine. The table includes a description for each code and the recommended troubleshooting procedure that must be performed.Portions of this material are reprinted with permission from SAE J1939DA_201607© 2016 SAE International. SAE International is not responsible for any use or translation of this material, in whole or in part. Please contact SAE International to obtain a complete copy of SAE J1939DA_201607, the official definitive source of this standard.
Table 1
J1939 Code Description Refer to Procedure
27-3 Engine Exhaust Gas Recirculation Valve Position Sensor : Voltage Above Normal Valve Position Sensor - Test
27-4 Engine Exhaust Gas Recirculation Valve Position Sensor : Voltage Below Normal Valve Position Sensor - Test
29-2 Accelerator Pedal Position 2 : Erratic, Intermittent, or Incorrect (Engines equipped with a throttle switch) Throttle Switch Circuit - Test
29-2 Accelerator Pedal Position 2 : Erratic, Intermittent or Incorrect (Engines equipped with an analog throttle) Analog Throttle Position Sensor Circuit - Test
29-3 Accelerator Pedal Position 2 : Voltage Above Normal (Engines equipped with an analog throttle) Analog Throttle Position Sensor Circuit - Test
29-3 Accelerator Pedal Position 2 : Voltage Above Normal (Engines equipped with a digital throttle) Digital Throttle Position Sensor Circuit - Test
29-4 Accelerator Pedal Position 2 : Voltage Below Normal (Engines equipped with an analog throttle) Analog Throttle Position Sensor Circuit - Test
29-4 Accelerator Pedal Position 2 : Voltage Below Normal (Engines equipped with a digital throttle) Digital Throttle Position Sensor Circuit - Test
29-8 Accelerator Pedal Position 2 : Abnormal Frequency, Pulse Width or Period Digital Throttle Position Sensor Circuit - Test
51-3 Engine Throttle Position : Voltage Above Normal Valve Position Sensor - Test
51-4 Engine Throttle Position : Voltage Below Normal Valve Position Sensor - Test
91-2 Accelerator Pedal Position 1 : Erratic, Intermittent, or Incorrect (Engines equipped with a throttle switch) Throttle Switch Circuit - Test
91-2 Accelerator Pedal Position 1 : Erratic, Intermittent or Incorrect (Engines equipped with an analog throttle) Analog Throttle Position Sensor Circuit - Test
91-3 Accelerator Pedal Position 1 : Voltage Above Normal (Engines equipped with an analog throttle) Analog Throttle Position Sensor Circuit - Test
91-3 Accelerator Pedal Position 1 : Voltage Above Normal (Engines equipped with a digital throttle) Digital Throttle Position Sensor Circuit - Test
91-4 Accelerator Pedal Position 1 : Voltage Below Normal (Engines equipped with an analog throttle) Analog Throttle Position Sensor Circuit - Test
91-4 Accelerator Pedal Position 1 : Voltage Below Normal (Engines equipped with a digital throttle) Digital Throttle Position Sensor Circuit - Test
91-8 Accelerator Pedal Position 1 : Abnormal Frequency, Pulse Width or Period Digital Throttle Position Sensor Circuit - Test
97-3 Water In Fuel Indicator : Voltage Above Normal Water in Fuel Sensor - Test
97-15 Water In Fuel Indicator : High - least severe (1) Fuel Contains Water
97-16 Water In Fuel Indicator : High - moderate severity (2) Fuel Contains Water
100-1 Engine Oil Pressure : Low - most severe (3) Oil Pressure Is Low
100-3 Engine Oil Pressure : Voltage Above Normal Engine Pressure Sensor Open or Short Circuit -