Dodge Caravan 2.4/3.0/3.3/3.8L (1999 – 2003) Trouble Code Info

Model Year Engine identification System
Caravan 2.4L 1999-02 EDZ SBEC III
Caravan 3.0L 1999-02 EFA SBEC III
Caravan 3.3L 1999-02 EGA/EGM SBEC III
Caravan 3.8L 1999-02 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.
varavan03-1varavan03-2

Accessing

1999-01

• Trouble codes can only be displayed by using a Scan Tool connected to the data link connector (OLC) 1999-00 [1] & 2000 –> [2]

2001-02

  • Within 5 seconds switch the ignition key ON-OFFON-OFF-ON .
  • Odometer will display trouble codes.
  • If no trouble codes are stored in ECM, odometer will display ‘P1684’ and ‘done’ or only ‘done’.
  • Trouble codes can also be displayed by using a Scan Tool connected to the data link connector (DLC) [2]

2003

• Trouble codes can only 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 Fault location Probable cause
PO, P2,UO Refer to OBO-II trouble code tables
P1192 Intake air temperature (IAT) sensor -voltage low Wiring, IAT sensor
P1193 Intake air temperature (IAT) sensor -voltage high Wiring, IAT sensor
P1195 Heated oxygen sensor (H02S) 1, bank 1 slow response Heating inoperative, wiring, H025
P1196 Heated oxygen sensor (H02S) 2, bank 1 slow response Heating inoperative, wiring, H025
P1281 Engine temperature -low for long period Wiring, cooling system, coolant thermostat, ECT sensor
P1282 Fuel pump relay Wiring open circuit/short circuit, fuel pump relay
P1290 Compressed natural gas pressure sensorpressure high Compressed natural gas system, wiring,compressed natural gas pressure sensor
P1292 Compressed natural gas pressure sensor voltage high Wiring, compressed natural gas pressure sensor
P1293 Compressed natural gas pressure sensor voltage low 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
P1295 Throttle position (TP) sensor -supply voltage Wiring, TP sensor, ECM
P1296 Manifold absolute pressure (MAP) sensor supply voltage Wiring, MAP sensor, ECM
P1297 Manifold absolute pressure (MAP) sensor Wiring, hose connection(s), MAP sensor
P1298 System too lean -at prolonged wide open throttle Intake/exhaust leak, MAP sensor, fuelpressure/pump, injector(s), H025
P1299 Manifold absolute pressure (MAP) sensor/ throttle position (TP) sensor Intake leak, hose connection(s), MAP sensor, TP sensor
P1388 Engine control relay Wiring open circuit/short circuit, engine control relay
P1389 Engine control relay Wiring open circuit, engine control relay
P1390 Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -signal synchronisation Timing belt loose/jumped position, CKP sensor,CMP 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
P1478 Battery temperature sensor Wiring, ambient/battery temperature sensor
P1486 Evaporative emission (EVAP) system blockage detected Hose connection(s), hose blocked/trapped, EVAP canister
P1488 Engine control module (ECM) -auxiliary 5 volt output low Wiring, ECM
P1489 Engine coolant blower motor relay Wiring open circuit/short circuit, engine coolant blower motor relay -high speed
P1490 Engine coolant blower motor relay Wiring open circuit/short circuit, engine coolant blower motor relay -low speed
P1491 Engine coolant blower motor relay -circuit malfunction Wiring open circuit/short circuit, engine coolant blower motor relay
P1492 Ambient/battery temperature sensor -high input Wiring short circuit to positive, ambient/ battery temperature sensor, ECM
P1493 Ambient/battery temperature sensor -voltage low Wiring, ambient/battery temperature sensor
P1494 Evaporative emission (EVAP) leak detection pump -pressure switch Wiring, hose leaklblockage, EVAP leak detection pump
P1495 Evaporative emission (EVAP) leak detection pump solenoid Wiring open circuit/short circuit, hose leakl blockage, EVAP leak detection pump solenoid
P1496 Engine control module (ECM) -5 volt output low ECM
P1594 Alternator -voltage high Wiring, battery, alternator
P1595 Cruise control Wiring open circuit/short circuit, hoses, cruise control master switch, cruise control vacuum switching valve
P1596 Cruise control master switch -high voltage Wiring, cruise control master switch
P1597 Cruise control master switch -low voltage Wiring, cruise control master switch
P1598 AlC refrigerant pressure sensor -high input Wiring, AlC refrigerant pressure too high (cooling fault/incorrectly charged), AlC refrigerant pressure sensor
P1599 AlC refrigerant pressure sensor -low input Wiring, AlC refrigerant pressure too low (incorrectly charged), AlC refrigerant pressure sensor
P1602 Engine control module (ECM) not programmed New ECM not programmed, incorrectly programmed, ECM
P1603 Engine control module (ECM) -RAM link error ECM
P1604 Engine control module (ECM) -RAM read/ write error ECM
P1607 Engine control module (ECM) -shut down timer error ECM
P1681 CAN data bus, instrumentation -no signal Wiring, instrumentation control module
P1682 Alternator -voltage low Wiring, battery, alternator drive belt, alternator
P1683 Cruise control Wiring, cruise control vacuum switching valve
P1684 Engine control module (ECM) -supply voltage disconnected within last 50 ignition switch ON-OFF cycles Wiring, battery
P1685 P1686 Key not programmed into immobilizer control module CAN data bus, immobilizer control module no signal Wiring, ignition key not matched/damaged,immobilizer control module Wiring, immobilizer control module
P1687 CAN data bus, instrumentation no signal Wiring, instrumentation control module mechanical
P1695 CAN data bus, body control module (BCM) no signal Wiring, BCM
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, TeM
P1765 Transmission system relay Wiring open circuit/short circuit, transmission system relay, ECMrrCM
P1899 Park/neutral position (PNP) switch -input circuit malfunction Wiring, PNP switch, ECMrrCM