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Chrysler New Yorker. Manual - part 338

Hex Code

Generic

Scan Tool

Code

DRB Scan Tool Display

Description of Diagnostic Trouble Code

P0206

Injector #6 Control Circuit

Injector #6 output driver does not respond

properly to the control signal.

P1478

Int. Temp Sensor Ckt.

Internal temperature sensor input voltage out of

acceptable range.

P0354

Ignition coil #4 ckt

Peak primary circuit current not achieved with
maximum dwell time.

P0355

Ignition coil #5 ckt

Peak primary circuit current not achieved with
maximum dwell time.

P1683

SPD CTRL PWR RLY; or S/C

12v Driver CKT

Malfunction detected with power feed to speed

control servo solenoids.

P1596

Speed Control Switch Always

High

Speed control switch input above the maximum

acceptable voltage.

P1597

Speed Control Switch Always

Low

Speed control switch input below the minimum

acceptable voltage.

P1289

Manifold Tune Valve Solenoid

Circuit

An open or shorted condition detected in the MTV

solenoid control circuit.

P1598

A/C Pressure Sensor Volts

Too High

Sensor input voltage is above 4.9 volts.

P1599

A/C Pressure Sensor Volts

Too Low

Sensor input voltage is below .098 volts.

P1490

Low Speed Fan CTRL Relay

Circuit

An open or shorted condition detected in the

control circuit of the low speed radiator fan relay.

P1489

Hi Speed Fan Relay Circuit

An open or shorted condition detected in the

control circuit of the high speed radiator fan relay.

60**

P1698

No PCI Messages From TCM

No messages received from Transmission Control

Module.

P1695

No PCI Message From Body

Control Module

No messages received from Body Control

Module.

P1282

Fuel Pump Relay Control

Circuit

An open or shorted condition detected in the fuel

pump relay control circuit.

P0133

Right Bank Upstream O2S

Slow Response

Oxygen sensor response slower than minimum

required switching frequency.

P0135

Right Rear (or just) Upstream

O2S Heater Failure

Upstream oxygen sensor heating element circuit

malfunction.

P0141

Right Rear (or just)

Downstream O2S Heater

Failure

Oxygen sensor heating element circuit

malfunction.

P0300

Multiple Cylinder Mis-fire

Misfire detected in multiple cylinders.

P0301

Cylinder #1 Mis-fire

Misfire detected in cylinder #1.

P0302

Cylinder #2 Mis-fire

Misfire detected in cylinder #2.

P0303

Cylinder #3 Mis-fire

Misfire detected in cylinder #3.

P0304

Cylinder #4 Mis-fire

Misfire detected in cylinder #4.

P0420

Right Rear (or just) Catalyst

Efficiency Failure

Catalyst efficiency below required level.

300M

EMISSION CONTROL SYSTEMS

25 - 5

DESCRIPTION AND OPERATION (Continued)

Hex Code

Generic

Scan Tool

Code

DRB Scan Tool Display

Description of Diagnostic Trouble Code

P0441

Evap Purge Flow Monitor

Failure

Insufficient or excessive vapor flow detected

during evaporative emission system operation.

P1899

P/N Switch Stuck in Park or

in Gear

Incorrect input state detected for the Park/Neutral

switch, auto. trans. only.

P0551

Pwr steering sw perf

Incorrect input state detected for the power

steering switch circuit.

P0172

Right Rear (or just) Fuel

System Rich

A rich air/fuel mixture has been indicated by an

abnormally lean correction factor.

P0171

Right Rear (or just) Fuel

System Lean

A lean air/fuel mixture has been indicated by an

abnormally rich correction factor.

P0175

Left Front Fuel System Rich

A rich air/fuel mixture has been indicated by an

abnormally lean correction factor.

P0174

Left Front Fuel System Lean

A lean air/fuel mixture has been indicated by an

abnormally rich correction factor.

P0153

Left Front Upstream O2

Sensor Slow Response

Oxygen sensor response slower than minimum

required switching frequency.

P0155

Left Front Upstream O2S

Heater Failure

Oxygen sensor heater element malfunction.

P0161

Left Front Downstream O2S

Heater Failure

Oxygen sensor heater element malfunction.

P0138

Right Rear (or just)

Downstream O2S Shorted to

Voltage

Oxygen sensor input voltage maintained above

the normal operating range.

P0158

Left Front O2S Shorted to

Voltage

Oxygen sensor input voltage maintained above

the normal operating range.

P0125

Closed Loop Temp Not

Reached

Engine does not reach 20°F within 5 minutes with

a vehicle speed signal.

P0140

Right Rear (or just)

Downstream O2S Stays at

Center

Neither rich or lean condition detected from the

downstream oxygen sensor.

P0160

Left Front O2S Stays at

Center

Neither rich or lean condition detected from the

downstream oxygen sensor.

P0121

TPS Voltage Does Not Agree

With MAP

TPS signal does not correlate to MAP sensor.

P0700

EATX Controller DTC Present

An automatic transmission input DTC has been

set in the transmission controller. Refer to Group

21.

P1294

Target Idle Not Reached

Actual idle speed does not equal target idle

speed.

P1299

High air flow

MAP sensor signal does correlate to TPS signal.

Possible vacuum leak.

P1496

5 Volt Supply Output Too Low

5 volt output from regulator does not meet

minimum requirement.

P0462

Fuel Level Sending Unit Volts

Too Low

Open circuit between PCM and fuel gauge

sending unit.

25 - 6

EMISSION CONTROL SYSTEMS

300M

DESCRIPTION AND OPERATION (Continued)

Hex Code

Generic

Scan Tool

Code

DRB Scan Tool Display

Description of Diagnostic Trouble Code

P0463

Fuel Level Sending Unit Volts

Too High

Circuit shorted to voltage between PCM and fuel

gauge sending unit.

P0460

Fuel Level Unit No Change

Over Miles

No movement of fuel level sender detected.

P0703

Brake Switch Stuck Pressed

or Released

No release of brake switch seen after too many

accelerations.

P1493

Ambient/Batt Temp Sen Volts

Too Low

Battery temperature sensor input voltage below

an acceptable range.

P1492

Ambient/Batt Temp Sensor

Volts Too High

Battery temperature sensor input voltage above

an acceptable range.

P0131

Right Rear (or just) Upstream

O2S Shorted to Ground

O2 sensor voltage too low, tested after cold start.

P0137

Right Rear (or just)

Downstream O2S Shorted to

Ground

O2 sensor voltage too low, tested after cold start.

P1391

Intermittent Loss of CMP or

CKP

Intermittent loss of either camshaft or crankshaft

position sensor.

P0442

Evap sys small leak

Small leak has been detected by the leak

detection monitor.

P0455

Evap sys gross leak

The leak detection monitor is unable to pressurize

EVAP system, indicating a large leak.

P0305

Cylinder #5 Mis-fire

Misfire detected in cylinder #5.

P0306

Cylinder #6 Mis-fire

Misfire detected in cylinder #6.

P0432

Left Front Catalyst Efficiency

Failure

Catalyst efficiency below required level.

P0151

Left Front O2S Shorted to

Ground

O2 sensor voltage too low, tested after cold start.

P0157

Left Front O2S Shorted to

Ground

O2 sensor voltage too low, tested after cold start.

P1495

Leak det pmp sol ckt

Leak detection pump solenoid circuit fault (open

or short).

P1494

Leak det pmp pres sw

Leak detection pump switch does not respond to

input.

P1398

Mis-fire Adaptive Numerator

at Limit

CKP sensor target windows have too much

variation.

P1486

EVAP hose pinched

Plug or pinch detected between purge solenoid

and fuel tank.

P1195

Cat Mon Slow O2 Right

Upstream

Oxygen sensor response slower than minimum

required switching frequency during catalyst

monitor.

P1196

Cat Mon Slow O2 Left

Upstream

Oxygen sensor response slower than minimum

required switching frequency during catalyst

monitor.

P0405

EGR pos volt low

EGR position sensor input below the acceptable

voltage range.

300M

EMISSION CONTROL SYSTEMS

25 - 7

DESCRIPTION AND OPERATION (Continued)

Hex Code

Generic

Scan Tool

Code

DRB Scan Tool Display

Description of Diagnostic Trouble Code

P0406

EGR pos volt high

EGR position sensor input above the acceptable

voltage range.

P0404

EGR sensor perf

EGR position sensor signal does not correlate to

EGR duty cycle.

P0356

Ignition coil #6 ckt

Peak primary circuit current not achieved with

max. dwell time.

P1288

Short run valve ckt

An open or shorted condition detected in the SRV

tuning circuit.

P1687

No MIC Bus Message

No PCI message received from MIC module.

P1686

No SKIM Bus Message

No PCI message recived from SKIM module.

P1685

SKIM Invalid Key

The engine controller has received an invalid key

from the SKIM.

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 (Check
Engine) Lamp will be illuminated. These monitors
generate Diagnostic Trouble Codes that can be dis-
played with the check engine lamp or a scan tool.

The following is a list of the system monitors:
• EGR Monitor

• Misfire Monitor

• Fuel System Monitor

• Oxygen Sensor Monitor

• Oxygen Sensor Heater Monitor

• Catalyst Monitor

• Evaporative System Leak Detection Monitor
Following is a description of each system monitor,

and its DTC.

Refer to the appropriate Powertrain Diagnos-

tics Procedures manual for diagnostic procedures.

HEX 66, and 7A—OXYGEN SENSOR (O2S)
MONITOR

Effective control of exhaust emissions is achieved

by an oxygen feedback system. The most important
element of the feedback system is the O2S. The O2S
is located in the exhaust path. Once it reaches oper-
ating temperature 300° to 350°C (572° to 662°F), the

sensor generates a voltage that is inversely propor-
tional to the amount of oxygen in the exhaust. The
information obtained by the sensor is used to calcu-
late the fuel injector pulse width. This maintains a
14.7 to 1 air fuel (A/F) ratio. At this mixture ratio,
the catalyst works best to remove hydrocarbons (HC),
carbon monoxide (CO) and nitrous oxide (NOx) from
the exhaust.

The O2S is also the main sensing element for the

EGR, Catalyst and Fuel Monitors.

The O2S may fail in any or all of the following

manners:

• Slow response rate

• Reduced output voltage

• Dynamic shift

• Shorted or open circuits
Response rate is the time required for the sensor to

switch from lean to rich once it is exposed to a richer
than optimum A/F mixture or vice versa. As the sen-
sor starts malfunctioning, it could take longer to
detect the changes in the oxygen content of the
exhaust gas.

The output voltage of the O2S ranges from 0 to 1

volt. A good sensor can easily generate any output
voltage in this range as it is exposed to different con-
centrations of oxygen. To detect a shift in the A/F
mixture (lean or rich), the output voltage has to
change beyond a threshold value. A malfunctioning
sensor could have difficulty changing beyond the
threshold value.

HEX 67, 69, 7C, and 7D—OXYGEN SENSOR
HEATER MONITOR

If there is an oxygen sensor (O2S) DTC as well as

a O2S heater DTC, the O2S fault MUST be repaired
first. After the O2S fault is repaired, verify that the
heater circuit is operating correctly.

25 - 8

EMISSION CONTROL SYSTEMS

300M

DESCRIPTION AND OPERATION (Continued)

Content .. 336 337 338 339 ..