Jeep Cherokee 2000 Service Manual - page 1926
(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.
P0406
EGR Position Sensor Volts Too High
EGR position sensor input above the acceptable voltage
range.
P0412
Secondary Air Solenoid Circuit
An open or shorted condition detected in the secondary
air (air switching/aspirator) solenoid control circuit.
P0420 (M)
1/1 Catalytic Converter Efficiency
Catalyst 1/1 efficiency below required level.
P0432 (M)
1/2 Catalytic Converter Efficiency
Catalyst 2/1 efficiency below required level.
P0441 (M)
Evap Purge Flow Monitor
Insufficient or excessive vapor flow detected during
evaporative emission system operation.
P0442 (M)
Evap Leak Monitor Medium Leak
Detected
A small leak has been detected in the evaporative
system.
P0443 (M)
Evap Purge Solenoid Circuit
An open or shorted condition detected in the EVAP purge
solenoid control circuit.
P0455 (M)
Evap Leak Monitor Large Leak
Detected
A large leak has been detected in the evaporative system.
P0456 (M)
Evap Leak Monitor Small Leak
Detected
Leak has been detected in the evaporative system.
P0460
Fuel Level Unit No Change Over
Miles
During low fuel
P0460
Fuel Level Unit No Change Over
Miles
Fuel level sending unit voltage does not change for more
than 40 miles.
P0462
Fuel Level Sending Unit Volts Too
Low
Fuel level sensor input below acceptable voltage.
P0462 (M)
Fuel Level Sending Unit Volts Too
Low
Open circuit between PCM and fuel gauge sending unit.
P0463
Fuel Level Sending Unit Volts Too
High
Fuel level sensor input above acceptable voltage.
P0463 (M)
Fuel Level Sending Unit Volts Too
High
Circuit shorted to voltage between PCM and fuel gauge
sending unit.
P0500 (M)
No Vehicle Speed Sensor Signal
No vehicle speed sensor signal detected during road load
conditions.
P0500 (M)
No Vehicle Speed Sensor Signal
A vehicle speed signal was not detected.
P0505 (M)
Idle Air Control Motor Circuits
SBEC II
P0522
Oil Pressure Voltage Too Low
Oil pressure sending unit (sensor) voltage input below the
minimum acceptable voltage.
P0523
Oil Pressure Voltage Too High
Oil pressure sending unit (sensor) voltage input above the
maximum acceptable voltage.
P0524
Oil Pressure Too Low
Engine oil pressure is low. Engine power derated.
P0545
A/C Clutch Relay Circuit
Problem detected in air conditioning clutch relay control
circuit.
P0551
Power Steering Switch Failure
Incorrect input state detected for the power steering
switch circuit. PL: High pressure seen at high speed.
P0562
Charging System Voltage Too Low
Supply voltage sensed at ECM too low.
P0563
Charging System Voltage Too High
Supply voltage sensed at ECM too high.
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EMISSION CONTROL SYSTEMS
XJ
DESCRIPTION AND OPERATION (Continued)