Dodge Ram Truck 5.9L Turbo Diesel (1996 – 1997) Trouble Code Info

Model Year Engine identification System
Ram  Truck 5.9L Turbo Diesel 1996-97 ETB JTEC

General information

  • Refer to the front of this manual for general test conditions, terminology, detailed descriptions of wiring faults and a general trouble shooter for electrical and mechanical faults.
  • Malfunction indicator lamp (MIL) will illuminate if certain faults are recorded.
  • Trouble codes can be displayed by the MIL or by using a Scan Tool connected to the data link connector (DLC).
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Accessing

Flash codes

  • Within 5 seconds switch the ignition key ON-OFF-ON-OFF-ON.
  • Count MIL flashes. Note trouble codes.
  • Each trouble code consists of two groups [1] [A].
  • The first group of flashes indicate the ‘tens’ of the trouble code.
  • The second group of flashes indicate the ‘units’ of the trouble code.
  • A short pause separates ‘tens’ and ‘units’ [1] [D].
  • A long pause separates each trouble code [1] [E].
  • For example: Trouble code 42 displayed [1]
  • End of test sequence indicated by trouble code 55.

P codes & Hex codes

  • Trouble codes can also be displayed by using a Scan Tool connected to the data link connector (DLC) [2]

Erasing

  • Trouble codes can only be erased by using a Scan Tool connected to the data link connector (DLC).

Trouble code  identification

Scan code Ptype Fault location Probable cause
PO,P2,UO Refer to OBO-II trouble code tables
P1492 Ambient/battery temperature sensor -voltage high Wiring, ambient/battery temperature sensor, ECM
P1493 Ambient/battery temperature sensor -voltage low Wiring, ambient/battery temperature sensor, ECM
P1496 Engine control module (ECM) -5 volt output low ECM
P1696 Engine control module (ECM) -EEPROM error ECM
P1756 Govemor pressure not equal to target (15-20 PSI) -mid pressure malfunction Signal wire open circuit/short circuit, valve body,sensor supply wire open circuit, transmission fluid level, governor pressure solenoid, transmission mechanical fault, ECM -no 5 volt supply
P1757 Governor pressure not equal to target -low pressure malfunction Signal wire open circuit/short circuit, valve body,sensor supply wire open circuit, transmission fluid level, governor pressure solenoid, transmission mechanical fault, ECM -no 5 volt supply
P1762 Govemor pressure sensor -incorrect signal Signal wire short circuit to ground/positive, supply wire open circuit/short circuit, transmission fluid level, governor pressure solenoid, governor pressure sensor, ECM
P1763 Governor pressure sensor -signal high Signal wire short circuit to positive, supply wire open circuit, transmission fluid level, governor pressure sensor, ECM
P1764 Governor pressure sensor -signal low Signal wire short circuit to ground, supply wire open circuit, transmission fluid level, governor pressure sensor, ECM
P1765 Transmission system relay Wiring open circuit/short circuit, transmission system relay, ECM
P1899 Park/neutral position (PNP) switch -input circuit malfunction Wiring, PNP switch, ECM
 
Flash code Scan code Hex type Fault location Probable cause
11 28 Crankshaft position (CKP) sensor Wiring, air gap, CKP sensor
12   Engine control module (ECM) -supply voltage disconnected within last 50 ignition switch ON-OFF cycles Wiring, battery
15   Vehicle speed sensor (V55) -signal Wiring, V55, ECM
  23 Vehicle speed sensor (V55) no signal Wiring, V55, ECM
  A6 Output shaft speed (OSS) sensor -circuit malfunction Wiring, 055 sensor, ECM
22   Engine coolant temperature (ECT) sensorvoltage low/high Wiring, coolant thermostat, ECT sensor
  1E Engine coolant temperature (ECT) sensor lowinput Coolant thermostat, wiring short circuit to ground, ECT sensor
  1F Engine coolant temperature (ECT) sensor highinput Coolant thermostat, wiring open circuit/ short circuit to positive, ground wire defective, ECT sensor
23   Intake air temperature (IAT) sensor voltage low/high Wiring, IAT sensor
  39 Intake air temperature (lAT) sensor -low input Wiring short circuit to ground, IATsensor
  3A Intake air temperature (IAT) sensor -high input Wiring open circuit/short circuit to positive, ground wire defective, IAT sensor
24   Throttle position (TP) sensor -voltage low/ high Wiring, accelerator cable adjustment, TP sensor
  1A Throttle position (TP) sensor -low input Wiring short circuit to ground, TP sensor
  1B Throttle position (TP) sensor -high input Wiring short circuit to positive, TP sensor
  84 Throttle position (TP) sensor -range/ performance problem Wiring, accelerator cable adjustment, TP sensor
32 11 Exhaust gas recirculation (EGR) -circuit malfunction Wiring, EGR solenoid, EGR control module, ECM
33 10 AlC compressor clutch relay Wiring open circuit/short circuit, AlC compressor clutch relay
34   Cruise control Wiring open circuit/short circuit, hoses, voltage low/high, cruise control master switch, cruise control vacuum switching valve
  OF Cruise control Wiring open circuit/short circuit, hoses, voltage low/high, cruise control vacuum switching valve
  56 Cruise control master switch -high voltage Wiring, cruise control master switch
  57 Cruise control master switch -low voltage Wiring, cruise control master switch
37   Transmission control system -malfunction Wiring, transmission fluid level, transmission mechanical fault, PNP switch, TCC solenoid,TFT sensor, TFP solenoid, 55, governor pressure solenoid, transmission system relay, ECM
  OC Torque converter clutch (TCC) solenoid -electrical Wiring open circuit/short circuit, TCC solenoid
  32 5hift solenoid (55) 3-4 -electrical Wiring, 55, ECM
37 4A Transmission fluid temperature (TFT) sensorlow input Wiring short circuit to ground, TFT sensor,ECM
  4B Transmission fluid temperature (TFT) sensor high input Wiring short circuit to positive, TFT sensor, ECM
  72 Park/neutral position (PNP) switch -inputcircuit malfunction Wiring, PNP switch, ECM
  80 Governor pressure not equal to target (15-20PSI) -mid pressure malfunction Signal wire open circuit/short circuit, valve body, sensor supply wire open circuit,transmission fluid level, governor pressure solenoid, transmission mechanical fault, ECM-no 5 volt supply
  BE Govemor pressure not equal to target -low pressure malfunction Signal wire open circuit/short circuit, valve body, sensor supply wire open circuit, transmission fluid level, governor pressure solenoid, transmission mechanical fault, ECM no 5 volt supply
  94 Torque converter clutch (TCC) solenoid circuit malfunction Wiring, TCC solenoid
  A4 Transmission fluid temperature (TFT) sensor range/performance problem Wiring, TFT sensor
  AS Gear selection, 3-4 shift malfunction Wiring, TR sensor, shift solenoids, transmission mechanical fault
  AB Transmission fluid pressure (TFP) solenoid -electrical Wiring, TFP solenoid, ECM
  AD Transmission system relay Wiring open circuit/short circuit, transmission system relay, ECM
41 OB Alternator, field control -circuit malfunction Wiring open circuit/short circuit, alternator,battery
42   Engine control relay/fuel level sensor circuit malfunction Wiring open circuit/short circuit, engine control relay, fuel level sensor
  OA Engine control relay Wiring open circuit/short circuit, engine control relay
  2C Engine control relay Wiring open circuit, engine control relay
  95 Fuel level sensor -low input Wiring open circuit, fuel level sensor
  96 Fuel level sensor -high input Wiring short circuit to positive, fuel level sensor
  97 Fuel level sensor -malfunction Wiring, fuel level sensor
44   Ambient/battery temperature sensor voltagelow/high Wiring, ambient/battery temperature sensor, ECM
  9A Ambient/battery temperature sensor voltage high Wiring, ambient/battery temperature sensor, ECM
  99 Ambient/battery temperature sensor-voltage low Wiring, ambient/battery temperature sensor,ECM
45   Transmission control system -malfunction Wiring, transmission fluid level, transmission mechanical fault, PNP switch, TCC solenoid,TFT sensor, TFP solenoid, shift solenoid, overdrive solenoid/switch, governor pressure solenoid, transmission system relay, ECM
  32 Shift solenoid (SS) 3-4 -electrical Wiring, 55, ECM
  4A Transmission fluid temperature (TFT) sensorlow input Wiring short circuit to ground, TFT sensor,ECM
  4B Transmission fluid temperature (TFT) sensorhigh input Wiring short circuit to positive, TFT sensor,ECM
  80 Governor pressure not equal to target (15-20PSI) -mid pressure malfunction Signal wire open circuit/short circuit, valve body, sensor supply wire open Circuit,transmission fluid level, governor pressure solenoid, transmission mechanical fault, ECM no 5 volt supply
  8E Governor pressure not equal to target, -low pressure malfunction Signal wire open circuit/short circuit, valve body, sensor supply wire open circuit,transmission fluid level, governor pressure solenoid, transmission mechanical fault, ECM no 5 volt supply
  A4 Transmission fluid temperature (TFT) sensor range/perfonmance problem Wiring, TFT sensor
  A5 Gear selection, 3-4 -shift malfunction Wiring, TR sensor, shift solenoids, transmission mechanical fault
  A7 Governor pressure sensor -signal low Signal wire short circuit to ground, supply wire open circuit, transmission fluid level, governor pressure sensor, ECM
  AS Governor pressure sensor -signal high Signal wire short circuit to positive, supply wire open circuit, transmission fluid level,governor pressure sensor, ECM
  A9 Governor pressure sensor -incorrect signal Signal wire short circuit to ground/ positive,supply wire open circuit/short circuit,transmission fluid level, governor pressure solenoid, governor pressure sensor, ECM
  AB Transmission fluid pressure (TFP) solenoid -electrical Wiring, TFP solenoid, ECM
  AD Transmission system relay Wiring open circuit/short circuit, transmission system relay, ECM
  BC Overdrive solenoid/switch -performanceproblem Wiring, overdrive solenoid/switch,transmission mechanical fault, ECM
46 6 Alternator -voltage high Wiring, battery, alternator
47 5 Alternator -voltage low Wiring, battery, alternator drive belt, alternator
53   Engine control rnodule (ECM) -internal fault ECM
  2 Engine control module (ECM) intemal fault ECM
  44 Engine control module (ECM) internal fault ECM
55   End of MIL lamp code output
63 31 Engine control module (ECM) -EEPROM error ECM
65 73 Power steering pressure (PSP) switch -range/performance problem Wiring, PS system, PSP switch
68 8C Exhaust gas recirculation (EGR) system -flow malfunction Hose leak/blockage, wiring, EGR valve, EGR solenoid, EGR control module, ECM
71 89 Engine control module (ECM) -5 volt output low ECM
77 52 Cruise control Wiring, cruise control vacuum switching valve