Dodge Caravan 2.4/3.0/3.3/3.8L (1996 – 1997) Trouble Code Info

Model Year Engine identification System
Caravan 2.4L 1996-97 EDZ SBEC III
Caravan 3.0L 1996-97 EFA SBEC III
Caravan 3.3L 1996-97 EGA/EGM SBEC III
Caravan 3.8L 1996-97 EGH SBEC III

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 or flash if certain faults are recorded.
  • ECM operates in backup mode if sensors fail, to enable vehicle to be driven to repair shop.
  • 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] [B).
  • A long pause separates each trouble code [1] [C).
  • For example: Trouble code 21 displayed [1]
  • End of test sequence indicated by trouble code 55.

P codes & Hex codes

• Trouble codes can 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
P1290 Compressed natural gas pressure sensorpressure high Compressed natural gas system, wiring, compressed natural gas pressure sensor
P1294 Idle speed control (ISC) system -rpm lower/higher than expected Wiring, air leak, throttle valve tight/sticking, lAC valve
P1297 Manifold absolute pressure (MAP) sensor Wiring, hose connection(s), MAP sensor
P1391 Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -intermittent signal Wiring, poor connection, air gap, CKP sensor, CMP sensor
P1398 Engine control module (ECM) -misfire detection limit reached Wiring, poor connection, CKP sensor
P1486 Evaporative emission (EVAP) system -blockage detected Hose connection(s), hose blocked/trapped, EVAP canister
P1491 Engine coolant blower motor relay -low/high speed Wiring open circuit/short circuit, engine coolant blower motor relay -low/high speed
P1492 Ambient/battery temperature sensor -voltagehigh Wiring, ambient/battery temperature sensor
P1493 Ambient/battery temperature sensor -voltage low Wiring, ambient/battery temperature sensor
P1494 Evaporative emission (EVAP) leak detection pump -pressure switch Wiring, hose leak/blockage, EVAP leak detection pump
P1495 Evaporative emission (EVAP) leak detection pump solenoid Wiring open circuit/short circuit, hose leak! blockage, EVAP leak detection pump solenoid
P1496 Engine control module (ECM) -5 volt output low ECM
P1696 Engine control module (ECM) -EEPROM error ECM
P1697 Engine control module (ECM) -EEPROM error ECM
P1698 CAN data bus, transmission control module(TCM) -no signal Wiring, TCM
P1899 Park/neutral position (PNP) switch -input circuitmalfunction Wiring, PNP switch, ECMITCM
 
Flash code Scan code Hex type Fault location Probable cause
11   Crankshaft position (CKP) sensor/camshaft position (CMP) sensor Wiring, poor connection, air gap, CKP sensor, CMP sensor
90 Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -intermittent signal Wiring, poor connection, air gap, CKP sensor, CMP sensor
28 Crankshaft position (CKP) sensor -no signal Wiring, air gap, CKP sensor
SA Engine control module (ECM) -misfire detection limit reached Wiring, poor connection, CKP sensor
12   Engine control module (ECM) -supply voltagedisconnected within last 50 ignition switch ON-OFF cycles Wiring, battery
13 27 Manifold absolute pressure (MAP) sensor Wiring, hose connection(s), MAP sensor
14   Manifold absolute pressure (MAP) sensorinput low/high Wiring, MAP sensor
24 Manifold absolute pressure (MAP) sensor lowinput Wiring short circuit to ground, MAP sensor
25 Manifold absolute pressure (MAP) sensor high input Wiring short circuit to positive, MAP sensor
15 23 Vehicle speed sensor (VSS) -signal Wiring, VSS
17   Engine temperature -low for long period Wiring, cooling system, coolant thermostat, ECl sensor
21 Engine temperature -low for long period Wiring, cooling system, coolant thermostat, ECl sensor
80 Insufficient coolant temperature for closed loop fuel control Wiring, cooling system, coolant thermostat, ECT sensor
21   Heated oxygen sensor (H02S) 1/2, bank 1 -circuit malfunction/incorrect signal! voltage low/high Wiring, fuel pressure, injector control, EVAP canister purge valve, compression, air filter blocked, H02S
98 Heated oxygen sensor (H02S) 1, bank 1 low voltage Exhaust leak, wiring short circuit to ground, H02S
3E Heated oxygen sensor (H02S) 1, bank 1 high voltage Wiring short circuit to positive, fuel pressure, injector control, EVAP canister purge valve, air filter blocked, H02S
66 Heated oxygen sensor (H02S) 1, bank 1 slow response Wiring, heating inoperative, H02S
20 Heated oxygen sensor (H02S) 1, bank 1 no activity detected Wiring open circuit, heating inoperative, H02S
67 Heated oxygen sensor (H02S) 1, bank 1heater control -circuit malfunction Wiring, H02S
9C Heated oxygen sensor (H02S) 2, bank 1 low voltage Exhaust leak, wiring short circ.uit to ground, H02S
7E Heated oxygen sensor (H02S) 2, bank 1 high voltage Wiring short circuit to positive, catalytic converter, H02S
81 Heated oxygen sensor (H02S) 2, bank 1 no activity detected Wiring, heating inoperative, H02S
69 Heated oxygen sensor (H02S) 2, bank 1,heater control -circuit malfunction Wiring, H02S
CO Heated oxygen sensor (H02S) 1, bank 1 slow response Wiring, heating inoperative, H02S
22   Engine coolant temperature (ECT) sensor voltage low/high Wiring, coolant thermostat, ECT sensor
1E Engine coolant temperature (ECT) sensor low input Coolant thermostat, wiring short circuit to ground, ECT sensor
1F Engine coolant temperature (ECT) sensor high input 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 (IAT) sensor -low input Wiring short circuit to ground, IAT sensor
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
84 Throttle position (TP) sensor -range/performance problem Wiring, accelerator cable adjustment, TP sensor
1A Throttle position (TP) sensor -low input Wiring short circuit to ground, TP sensor
18 Throttle position (TP) sensor -high input Wiring short circuit to positive, TP sensor
25   Idle air control (lAC) valve Wiring open circuit/short circuit, lAC valve
19 Idle speed control (ISC) system malfunction Wiring open circuit/short circuit, lAC valve
8A Idle speed control (ISC) system -rpm lower/higher than expected Wiring, air leak, throttle valve tight/ sticking,lAC valve
27   Injector(s) -circuit malfunction Wiring, injector
15 Injector 1 -circuit malfunction Wiring, injector
14 Injector 2 -circuit malfunction Wiring, injector
13 Injector 3 -circuit malfunction Wiring, injector
3D Injector 4 -circuit malfunction Wiring, injector
45 Injector 5 -circuit malfunction Wiring, injector
46 Injector 6 -circuit malfunction Wiring, injector
31   Evaporative emission (EVAP) canister purgevalve -open/short circuit Wiring, EVAP canister purge valve
71 Evaporative emission (EVAP) system -incorrect flow detected Hose connection(s), intake leak, EVAP canister purge valve
AO Evaporative emission (EVAP) system -small leak detected Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve
12 Evaporative emission (EVAP) canister purge valve -circuit malfunction Wiring open circuit/short circuit, EVAP canister purge valve
31 A1 Evaporative emission (EVAP) system large leak detected Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve
BB Evaporative emission (EVAP) systemblockage detected Hose connection(s), hose blocked/ trapped, EVAP canister
88 Evaporative emission (EVAP) leak detection pump -pressure switch Wiring, hose leak/blockage, EVAP leak detection pump
B7 Evaporative emission (EVAP) leak detectionpump solenoid Wiring open circuit/short circuit, hose leaklblockage, EVAP leak detection pump solenoid
32   Exhaust gas recirculation (EGR) solenoid/ system -circuit malfunction Wiring, hoses, EGR solenoid
2E Exhaust gas recirculation (EGR) systeminsufficient flow detected Hose leaklblockage, wiring, EGR valve, EGR solenoid
11 Exhaust gas recirculation (EGR) -circuit malfunction Wiring open circuit/short circuit, EGR solenoid
33   A/C compressor clutch reiay/AIC refrigerant pressure sensor -voltage low/high A/C refrigerant pressure too low/high (cooling fault/incorrectly charged), wiring open circuit/short circuit, A/C compressor clutch relay, A/C refrigerant pressure sensor
10 A/C compressor clutch relay Wiring open circuit/short circuit, A/C compressor clutch relay
5A A/C refrigerant pressure sensor -high input A/C refrigerant pressure too high (cooling fault/incorrectly charged), wiring, A/C refrigerant pressure sensor
5B A/C refrigerant pressure sensor -low input A/C refrigerant pressure too low (incorrectly charged), wiring, A/C refrigerant pressure sensor
34 OF Cruise control Wiring open circuit/short circuit, hoses, voltage low/high, cruise control master switch, cruise control vacuum switching valve
35 OE Engine coolant blower motor relay -low/ high speed Wiring open circuit/short circuit, engine coolant blower motor relay -low/high speed
37   Torque converter clutch (TCC) solenoid/ parklneutral position (PNP) switch -circuit malfunction Wiring, TCC solenoid
72 Park/neutral position (PNP) switch -inputcircuit malfunction Wiring, PNP switch, ECMITCM
94 Torque converter clutch (TCC) solenoid circuitmalfunction Wiring, TCC solenoid
OC Torque converter clutch (TCC) solenoid -electrical Wiring open circuit/short circuit, TCC solenoid
41 8 Altemator, field control -circuit malfunction Wiring open circuit/short circuit, alternator, battery
42   Fuel pump relay/engine control relay/fuel level sensor -circuit malfunction Wiring open circuit/short circuit, fuel pump relay, engine control relay, fuel level sensor
65 Fuel pump relay Wiring open circuit/short circuit, fuel pump relay
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 levelsensor
97 Fuel level sensor -malfunction Wiring, fuel level sensor
43   Random/multiple cylinder(s) -misfire detected Wiring, spark plug(s), HT lead(s), injector(s), ignition coil(s), low compression
6A Random/multiple cylinder(s) -misfire detected Wiring, spark plug(s), HT lead(s), injector(s), ignition coil(s), low compression
68 Cylinder 1 -misfire detected Wiring, engine mechanical fault, ignition! fuel system, injector
6C Cylinder 2 -misfire detected Wiring, engine mechanical fault, ignition! fuel system, injector
60 Cylinder 3 -misfire detected Wiring, engine mechanical fault, ignition! fuel system, injector
6E Cylinder 4 -misfire detected Wiring, engine mechanical fault, ignition! fuel system, injector
AE Cylinder 5 -misfire detected Wiring, engine mechanical fault, ignition! fuel system, injector
AF Cylinder 6 -misfire detected Wiring, engine mechanical fault, ignition! fuel system, injector
28 Ignition coil A, primary!secondary -circuitmalfunction Wiring, ignition coil
2A Ignition coil B, primary!secondary -circuit malfunction Wiring, ignition coil
29 Ignition coil C, primary/secondary -circuit malfunction Wiring, ignition coil
44   Battery temperature sensor -voltage low/ high Wiring, battery temperature sensor
9A Ambient/battery temperature sensor voltage high Wiring, ambient/battery temperature sensor
99 Ambient/battery temperature sensor voltagelow Wiring, ambient/battery temperature sensor
45 89 Transmission control system -malfunction Wiring, ECMITCM
46 6 Alternator -voltage high Wiring, battery, alternator
47 5 Alternator -voltage low Wiring, battery, alternator drive belt, alternator
51 77 System too lean Wiring, intakelexhaust leak, MAP sensor, fuel pressurelpump, EVAP canister purge valve, injector(s), H02S
52 76 System too rich Wiring, intake blocked, EVAP canister purge valve, fuel pressure, EGR system, injector(s), air filter blocked, ignition system, H02S
53   Engine control module (ECM) -intemal fault ECM
2 Engine control module (ECM) internal fault ECM
44 Engine control module (ECM) internal fault ECM
54 1 Camshaft position (CMP) sensor -no signal Wiring, CMP sensor
55   End of MIL code output
61 3C Manifold absolute pressure (MAP) sensorbarometric pressure rangel performance problem Intakelexhaust leak, wiring, MAP sensor
62 30 Engine control module (ECM) -EEPROM error ECM
63 31 Engine control module (ECM) -EEPROM error ECM
64 BE Compressed natural gas pressure sensor pressure high Compressed natural gas system, wiring, compressed natural gas pressure sensor
65 98 Brake pedal position (BPP) switch -circuit malfunction Wiring, BPP switch
66   CAN data bus, transmission control module(TCM)lbody control module (BCM) no signal Wiring, TCM, BCM
60 CAN data bus, transmission control module (TCM) -no signal Wiring, TCM
61 CAN data bus, body control module (BCM) -no signal Wiring, BCM
71 92 Engine control module (ECM) -5 volt output low ECM
72 70 Catalytic converter system, bank 1 efficiency below threshold Catalytic converter, wiring, H02S 2
77 52 Cruise control Wiring, cruise control vacuum switching valve