Dodge Dakota (R1). Manual — part 807
(M)
Malfunction Indicator Lamp (MIL) illuminated during engine operation if this DTC was recorded
(depending if required by CARB and/or EPA). MIL is displayed as an engine icon on instrument panel.
(G)
Generator lamp illuminated
Generic Scan
Tool P-Code
DRB Scan Tool Display
Brief Description of DTC
P1480
PCV Solenoid Circuit
An open or shorted condition detected in the PCV
solenoid circuit.
P1481
EATX RPM Pulse Perf
EATX RPM pulse generator signal for misfire detection
does not correlate with expected value.
P1482
Catalyst Temperature Sensor Circuit
Shorted Low
Catalyst temperature sensor circuit shorted low.
P1483
Catalyst Temperature Sensor Circuit
Shorted High.
Catalyst temperature sensor circuit shorted high.
P1484
Catalytic Converter Overheat
Detected
A catalyst overheat condition has been detected by the
catalyst temperature sensor.
P1485
Air Injection Solenoid Circuit
An open or shorted condition detected in the air assist
solenoid circuit.
P1486
Evap Leak Monitor Pinched Hose
Found
LDP has detected a pinched hose in the evaporative hose
system.
P1487
Hi Speed Rad Fan CTRL Relay
Circuit
An open or shorted condition detected in the control
circuit of the #2 high speed radiator fan control relay.
P1488
Auxiliary 5 Volt Supply Output Too
Low
Auxiliary 5 volt sensor feed is sensed to be below an
acceptable limit.
P1488
5 Volt Supply Voltage Low
Sensor supply voltage for ECM sensors is too low.
P1489
High Speed Fan CTRL Relay Circuit
An open or shorted condition detected in the control
circuit of the high speed radiator fan control relay.
P1490
Low Speed Fan CTRL Relay Circuit
An open or shorted condition detected in control circuit of
the low speed radiator fan control relay.
P1491
Rad Fan Control Relay Circuit
An open or shorted condition detected in the radiator fan
control relay control circuit. This includes PWM solid state
relays.
P1492
Ambient/Batt Temp Sen Volts Too
High
External temperature sensor input above acceptable
voltage.
P1492 (M)
Ambient/Batt Temp Sensor Volts Too
High
Battery temperature sensor input voltage above an
acceptable range.
P1493 (M)
Ambient/Batt Temp Sen Volts Too
Low
External temperature sensor input below acceptable
voltage.
P1493 (M)
Ambient/Batt Temp Sen Volts Too
Low
Battery temperature sensor input voltage below an
acceptable range.
P1494 (M)
Leak Detection Pump Sw or
Mechanical Fault
Incorrect input state detected for the Leak Detection
Pump (LDP) pressure switch.
P1495
Leak Detection Pump Solenoid
Circuit
An open or shorted condition detected in the Leak
Detection Pump (LDP) solenoid circuit.
P1496
5 Volt Supply, Output Too Low
5 volt sensor feed is sensed to be below an acceptable
limit. ( less than 4v for 4 sec )
P1498
High Speed Rad Fan Ground CTRL
Rly Circuit
An open or shorted condition detected in the control
circuit of the #3 high speed radiator fan control relay.
P1499
Hydraulic cooling fan solenoid circuit
An open or shorted condition detected in the cooling fan
control solenoid circuit.
25 - 12
EMISSIONS CONTROL
AN
EMISSIONS CONTROL (Continued)
(M)
Malfunction Indicator Lamp (MIL) illuminated during engine operation if this DTC was recorded
(depending if required by CARB and/or EPA). MIL is displayed as an engine icon on instrument panel.
(G)
Generator lamp illuminated
Generic Scan
Tool P-Code
DRB Scan Tool Display
Brief Description of DTC
P1594 (G)
Charging System Voltage Too High
Battery voltage sense input above target charging voltage
during engine operation.
P1594
Charging System Voltage Too High
Battery voltage sense input above target charging voltage
during engine operation.
P1595
Speed Control Solenoid Circuits
An open or shorted condition detected in either of the
speed control vacuum or vent solenoid control circuits.
P1595
Speed Control Solenoid Circuits
An open or shorted condition detected in the speed
control vacuum or vent solenoid circuits.
P1596
Speed Control Switch Always High
Speed control switch input above maximum acceptable
voltage.
P1597
Speed Control Switch Always Low
Speed control switch input below minimum acceptable
voltage.
P1597
Speed Control Switch Always Low
Speed control switch input below the minimum acceptable
voltage.
P1598
A/C Pressure Sensor Volts Too High
A/C pressure sensor input above maximum acceptable
voltage.
P1598
A/C Sensor Input Hi
Problem detected in air conditioning electrical circuit.
P1599
A/C Pressure Sensor Volts Too Low
A/C pressure sensor input below minimum acceptable
voltage.
P1599
A/C Sensor Input Lo
Problem detected in air conditioning electrical circuit.
P1680
Clutch Released Switch Circuit
Problem detected in clutch switch electrical circuit.
P1681
No I/P Cluster CCD/J1850
Messages Received
No CCD/J1850 messages received from the cluster
control module.
P1682 (G)
Charging System Voltage Too Low
Battery voltage sense input below target charging voltage
during engine operation and no significant change in
voltage detected during active test of generator output
circuit.
P1682
Charging System Voltage Too Low
Charging system output voltage low.
P1683
SPD CTRL PWR Relay; or S/C 12v
Driver CKT
An open or shorted condition detected in the speed
control servo power control circuit.
P1683
Spd ctrl pwr rly, or s/c 12v driver
circuit
An open or shorted condition detected in the speed
control servo power control circuit.
P1684
Batt Loss in 50 Star
The battery has been disconnected within the last 50
starts
P1685
SKIM Invalid Key
The engine controler has received an invalid key from the
SKIM.
P1686
No SKIM BUS Messages Received
No CCD/J1850 messages received from the Smart Key
Immobilizer Module (SKIM).
P1687
No MIC BUS Message
No CCD/J1850 messages received from the Mechanical
Instrument Cluster (MIC) module.
P1688 (M)
Internal Fuel Injection Pump
Controller Failure
Internal problem within the fuel injection pump. Low
power, engine derated, or engine stops.
AN
EMISSIONS CONTROL
25 - 13
EMISSIONS CONTROL (Continued)
(M)
Malfunction Indicator Lamp (MIL) illuminated during engine operation if this DTC was recorded
(depending if required by CARB and/or EPA). MIL is displayed as an engine icon on instrument panel.
(G)
Generator lamp illuminated
Generic Scan
Tool P-Code
DRB Scan Tool Display
Brief Description of DTC
P1689 (M)
No Communication Between ECM
and Injection Pump Module
Data link circuit failure between ECM and fuel injection
pump. Low power, engine derated, or engine stops.
P1690 (M)
Fuel Injection Pump CKP Sensor
Does Not Agree With ECM CKP
Sensor
Problem in fuel sync signal. Possible injection pump
timing problem. Low power, engine derated, or engine
stops.
P1691
Fuel Injection Pump Controller
Calibration Error
Internal fuel injection pump failure. Low power, engine
derated, or engine stops.
P1692
DTC Set In ECM
A
9
Companion DTC
9
was set in both the ECM and PCM.
P1693 (M)
DTC Detected in Companion Module
A fault has been generated in the companion engine
control module.
P1693 (M)
DTC Detected in PCM/ECM or DTC
Detected in ECM
A
9
Companion DTC
9
was set in both the ECM and PCM.
P1694
Fault In Companion Module
No CCD/J1850 messages received from the powertrain
control module-Aisin transmission
P1694 (M)
No CCD Messages received from
ECM
Bus communication failure to PCM.
P1695
No CCD/J1850 Message From Body
Control Module
No CCD/J1850 messages received from the body control
module.
P1696
PCM Failure EEPROM Write Denied
Unsuccessful attempt to write to an EEPROM location by
the control module.
P1697
PCM Failure SRI Mile Not Stored
Unsuccessful attempt to update Service Reminder
Indicator (SRI or EMR) mileage in the control module
EEPROM.
P1698
No CCD/J1850 Message From TCM
No CCD/J1850 messages received from the electronic
transmission control module (EATX) or the Aisin
transmission controller.
P1698
No CCD Messages received from
PCM
Bus communication failure to PCM. A
9
Companion DTC
9
was set in both the ECM and PCM.
P1719
Skip Shift Solenoid Circuit
An open or shorted condition detected in the transmission
2-3 gear lock-out solenoid control circuit.
P1740
TCC or OD Sol Perf
A rationality error has been detected in either the TCC
solenoid or overdrive solenoid systems.
P1740 (M)
TCC OR O/D Solenoid Performance
Problem detected in transmission convertor clutch and/or
overdrive circuits (diesel engine with 4-speed auto. trans.
only).
P1756 (M)
GOV Press Not Equal to Target @
15-20 PSI
The requested pressure and the actual pressure are not
within a tolerance band for the Governor Control System
which is used to regulate governor pressure to control
shifts for 1st, 2nd, and 3rd gear. (Mid Pressure
Malfunction)
P1756 (M)
Governor Pressure Not Equal to
Target @ 15-20 PSI
Governor sensor input not between 10 and 25 psi when
requested (4-speed auto. trans. only).
25 - 14
EMISSIONS CONTROL
AN
EMISSIONS CONTROL (Continued)
(M)
Malfunction Indicator Lamp (MIL) illuminated during engine operation if this DTC was recorded
(depending if required by CARB and/or EPA). MIL is displayed as an engine icon on instrument panel.
(G)
Generator lamp illuminated
Generic Scan
Tool P-Code
DRB Scan Tool Display
Brief Description of DTC
P1757
GOV Press Not Equal to Target @
15-20 PSI
The requested pressure and the actual pressure are not
within a tolerance band for the Governor Control System
which is used to regulate governor pressure to control
shifts for 1st, 2nd, and 3rd gear (Zero Pressure
Malfunction)
P1757 (M)
Governor Pressure Above 3 PSI In
Gear With 0 MPH
Governor pressure greater than 3 psi when requested to
be 0 psi (4-speed auto. trans. only).
P1762 (M)
Gov Press Sen Offset Volts Too Lo
or High
The Governor Pressure Sensor input is greater than a
calibration limit or is less than a calibration limit for 3
consecutive park/neutral calibrations.
P1762 (M)
Governor Press Sen Offset Volts Too
Low or High
Sensor input greater or less than calibration for 3
consecutive Neutral/Park occurrences (4-speed auto.
trans. only).
P1763
Governor Pressure Sensor Volts Too
Hi
The Governor Pressure Sensor input is above an
acceptable voltage level.
P1763 (M)
Governor Pressure Sensor Volts Too
HI
Voltage greater than 4.89 volts (4-speed auto. trans.
only).
P1764 (M)
Governor Pressure Sensor Volts Too
Low
The Governor Pressure Sensor input is below an
acceptable voltage level.
P1764 (M)
Governor Pressure Sensor Volts Too
Low
Voltage less than .10 volts (4-speed auto. trans. only).
P1765 (M)
Trans 12 Volt Supply Relay CTRL
Circuit
An open or shorted condition is detected in the
Transmission Relay control circuit. This relay supplies
power to the TCC
P1765 (M)
Trans 12 Volt Supply Relay Ctrl
Circuit
Current state of solenoid output port is different than
expected (4-speed auto. trans. only).
P1899 (M)
P/N Switch Stuck in Park or in Gear
Incorrect input state detected for the Park/Neutral switch.
P1899 (M)
P/N Switch Stuck in Park or in Gear
Incorrect input state detected for the Park/Neutral switch
(3 or 4-speed auto. trans. only).
DESCRIPTION - TASK MANAGER
The PCM is responsible for efficiently coordinating
the operation of all the emissions-related compo-
nents. The PCM is also responsible for determining if
the diagnostic systems are operating properly. The
software designed to carry out these responsibilities
is call the ’Task Manager’.
DESCRIPTION - MONITORED SYSTEMS
There are new electronic circuit monitors that
check fuel, emission, engine and ignition perfor-
mance. These monitors use information from various
sensor circuits to indicate the overall operation of the
fuel, engine, ignition and emission systems and thus
the emissions performance of the vehicle.
The fuel, engine, ignition and emission systems
monitors do not indicate a specific component prob-
lem. They do indicate that there is an implied prob-
lem within one of the systems and that a specific
problem must be diagnosed.
If any of these monitors detect a problem affecting
vehicle emissions, the Malfunction Indicator Lamp
(MIL) will be illuminated. These monitors generate
Diagnostic Trouble Codes that can be displayed with
the MIL or a scan tool.
The following is a list of the system monitors:
• Misfire Monitor
• Fuel System Monitor
• Oxygen Sensor Monitor
• Oxygen Sensor Heater Monitor
• Catalyst Monitor
AN
EMISSIONS CONTROL
25 - 15
EMISSIONS CONTROL (Continued)
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