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1996 OBD-II DTC Comparisons

(Page posted in September, 1996. Your browser must process tables.)

This page is a comparison of the 1996 Dodge Dakota On-Board Diagnostics Trouble Codes with those of previous years. There were several points that make the comparisons difficult.

  • 1996 DTC descriptions are listed along with a Hex Code. There is a one-to-one relationship from the hex code to the description. But there isn't a reference to the Hex Codes in prior years and the manual does not state how you get the Hex Codes out of the system computer.
  • Some of the codes are now obsolete. Specifically, references to EGR valves, some air solenoids, and TBI injection are now obsolete.
  • The Chrysler Service Manual for 1996 had typographic errors or editing errors which make some of the code descriptions somewhat dubious.

 

The following Notes table will decode the Note column in the DTC Description table:

Note Descriptions for Column 3

Note Description
C Check Engine Light will illuminate
G Generator Light will illuminate
1 Distributor sensor used pre-92
2 Throttle Body Injection on '89; DTC 27 is DTC 26 for injector #2
3 May not apply to 2.5L-4 prior to 92
4 EGR Valve not present in '96 and other later years
5 Pre-93 models used DTC to track Idle Switch Circuit. CEL not illuminated
6 DTC '96 and other late models. Only pre-92
7 CEL not illuminated in early models
8 This DTC not in '96 Chrysler Service Manual

 

The following table is the complete list of Diagnostic Trouble Codes (DTC) listed in the Chrysler Service Manual for the 1996 Dodge Dakota with the new OBD-II diagnostic system.

OBD-II Diagnostic Code Comparison

DTC 96 Hex Code Note Diagnostic Trouble Code Description Generic Code DTC 95-94 DTC 93-92 DTC 91-89
11 28 C1 No crank reference signal detected during engine cranking   11 11 11
9D C Intermittent loss of either camshaft or crankshaft position signal P1391
BA C Intermittent loss of either camshaft or crankshaft position signal P1398
12     Power lost to PCM during last 50 key-on cycles   12 12 12
13 27 C No difference recognized between the engine MAP reading and the barometric (atmospheric) pressure reading from start-up P1297 13 13 13
14 24 C MAP sensor input below minimum acceptable voltage P0107 14 14 14
25 C MAP sensor input above maximum acceptable voltage P0108
87 C 5 volt output to MAP sensor open (No 5 volts to MAP) P1296
15 23 C No vehicle speed sensor signal detected during road load conditions P0500 15 15 15
A6 C Low output of speed sensor circuit above 15 MPH P0720
17 23 C Engine did not reach operating temperature within acceptable limits (Cold too long; thermostat)   17 17 17
80 C Engine does not reach 50 degrees (C) within 5 minutes with a vehicle speed signal (Closed loop temp. not reached) P0125
21 3E C Left O2 sensor shorted to voltage (voltage higher than normal operating range) P0132
66 C Upstream O2 sensor response slower than minimum required switching frequency or value does not go above .65 volts (sensor slow to respond) P0132 21 21 21
67 C Upstream O2 sensor heating element malfunction (sensor heater failure) P0135
68 C Downstream O2 sensor unable to switch rich/lean (neither rich or lean detected) P0139
69 C Downstream O2 sensor heating element malfunction (sensor heater failure) P0141
7E C Downstream O2 sensor shorted to voltage (voltage higher than normal operating range) P0138
9B C Upstream O2 sensor shorted to ground (tested after key off and at start to run) P0131
9C C Downstream O2 sensor shorted to ground (tested after key off and at start to run) P0137
22 1E C Engine coolant temperature sensor input below minimum acceptable voltage P0117 22 22 22
1F C Engine coolant temperature sensor input above the maximum acceptable voltage P0118
23 3A C Intake air temperature sensor input above maximum acceptable voltage P0113
39 C3 Intake air temperature sensor input below minimum acceptable voltage P0112 23 23 23
24 1A C Throttle Position Sensor (TPS) input below minimum acceptable voltage P0122 24 24 24
1B C TPS input above maximum acceptable voltage P0123
84 C TPS does not agree with Mass Air Flow Sensor (MAP) P0121
25 19 C Idle Air Control Motor has a shorted or open condition in one or more circuits P0505 25 25 25
8A C Actual idle speed does not equal target idle speed P1294
26   C2 Throttle Body Injector #1 detected high resistance condition P0505     26
27 15 C2 Fuel Injector #1 output driver does not respond to control signal P0201 27 27 27
14 C Fuel Injector #2 output driver does not respond to control signal P0202
13 Fuel Injector #3 output driver does not respond to control signal P0203
3D Fuel Injector #4 output driver does not respond to control signal P0204
45 Fuel Injector #5 output driver does not respond to control signal P0205
46 Fuel Injector #6 output driver does not respond to control signal P0206
4F Fuel Injector #7 output driver does not respond to control signal P0207
50 Fuel Injector #8 output driver does not respond to control signal P0208
31 12   An open or shorted condition detected in the duty cycle purge solenoid circuit P0443
71   Insufficient or excessive vapor flow detected during evaporative emission system operation P0441 31 31 31
32   C4 EGR solenoid circuit failure (or, in CA, air/fuel ratio change not detected during diagnostic       32
33 10   A/C clutch has an open or shorted condition   33 33 33
34 0F   An open or shorted condition detected in the Speed Control vaccum or vent solenoid circuits   34 34 34
57   Speed Control Switch always low. (MUX speed control switch below rated volts.)
35 0E C5 See Notes. Radiator fan control relay circuit fault on 2.5L4 P1491 35 35 35
36 0E C5 See Notes. Obsolete code for Air Switching solenoid circuit       36
37 0C C7 Short or open condition in TC part-throttle unlock solenoid P0743     37
4A C Transmission Temperture Sensor: Voltage too low P0712
4B Transmission Temperture Sensor: Voltage too low P0712
72 Park/Neutral switch not operating P1899
94 No RPM change on torque converter lockup P0740
A4 Transmission Temperture Sensor: No rise after start P0711
41 0B G Generator field not switching properly (alternator)   41 41 41
42 0A   Fuel pump auto shutdown relay control circuit fault detected   42 42 42
2C No ASD relay output voltage at PCM
65 Fuel pump relay control circuit fault detected
95 Fuel level sending unit voltage too low
96 Fuel level sending unit voltage too high
97 Fuel level sending unit voltage not changing over time
43 6A C Multiple cylinder misfire P0300
6B Cylinder #1 misfire P0301
6C Cylinder #2 misfire P0302
6D Cylinder #3 misfire P0303
6E Cylinder #4 misfire P0304
AE Cylinder #5 misfire P0305
AF Cylinder #6 misfire P0306
B0 Cylinder #7 misfire P0307
B1 Cylinder #8 misfire P0308
B2 Ignition coil: Primary circuit current not acheived with maximum dwell time P0351     43
44 99 C Battery temperature sensor voltage too low P1493
9A Battery temperature sensor voltage too high P1492 44 44 44 (6)
45 32 C Transmission 3/4 overdrive solenoid circuit P0753     45
8D Governor mid pressure not end target range (15 - 20 PSI) P1756
8E Governor low pressure switch fault (pressure above 3 PSI when stopped) P1757
A5 Transmisstion 3/4 shift malfunction (no RPM drop after shift) P0783
A7 Governor pressure sensor voltage too low P1764
A8 Governor pressure sensor voltage too high P1763
AB Governor pressure solenoid circuit P1748
AD Transmission 12 volt supply relay control circuit P1765
BC Overdrive switch pressed more than 5 minutes (voltage low)
46 06 G Alternator charging system voltage too high   46 46 46
47 05 G Alternator charging system voltage too low; no change in voltage during active test of generator output   47 47 47
51 77 C A lean air/fuel mixture has been indicated by an abnormally rich corrrection factor P0171 51 51 51
52 76 C A rich air/fuel mixture has been indicated by an abnormally lean corrrection factor P0171 52 52 52
53 76 C Internal control failure (computer fault) P0601 53 53 53
54 01 C Internal control failure (computer fault) P0340 54
55 08   Completion of fault code display on Check Engine Lamp P0340 55 55 55
55 08   Completion of fault code display on Check Engine Lamp   55 55 55
62   C8 Controller failure in that EMR miles not recorded (See Notes)   62 62 62
63 31 C PCM Failure, EEPROM write denied P1698 63 63 63
64 70 C7 Catalytic converter efficiency failure (Note 7) P0420
65 73 C (2.5L Only) Power steering switch failure (high pressure at high speed) P0551
71 B9   Auxillary 5 volt supplt output too low P1496
72 70 C7 Catalytic converter efficiency failure (Note 7) P0420

 

This information was compiled from Chilton Manuals and Chrysler Service Manuals. I appreciate the help of the following individuals for providing information on other years:

I hope the information proves useful.

Robert Allen ([email protected])
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