Jaguar XJ (X350). Manual — part 901

EVAP canister purge valve

power supply circuit;
open circuit, short
circuit

EVAP canister purge valve

operating vacuum hose
leak/restriction

EVAP canister purge valve

failure

P0444

Evaporative emissions

system (EVAP) canister

purge valve circuit open

circuit

EVAP canister purge valve

disconnected

EVAP canister purge valve to

ECM drive circuit; open
circuit, high resistance

EVAP canister purge valve

failure

For EVAP system components,

Evaporative Emissions - VIN

Range: G00442->G45703

P0445

Evaporative emissions

system (EVAP) canister

purge valve circuit short

circuit

EVAP canister purge valve to

ECM drive circuit; short
circuit to ground

EVAP canister purge valve

failure

For EVAP system components,

Evaporative Emissions - VIN

Range: G00442->G45703

P0446

Evaporative emissions

system (EVAP) canister

close valve (CCV)

malfunction

CCV power supply circuit;

open circuit, short
circuit

CCV to ECM drive circuit;

open circuit, high
resistance, short circuit
to B+ voltage

CCV failure

For EVAP system components,

Evaporative Emissions - VIN

Range: G00442->G45703

P0447

Evaporative emissions

system (EVAP) canister

close valve (CCV) circuit

open circuit

CCV power supply circuit;

open circuit, short
circuit

CCV to ECM drive circuit

open circuit, high
resistance, short circuit
to B+ voltage

CCV failure

For EVAP system components,

Evaporative Emissions - VIN

Range: G00442->G45703

P0448

Evaporative emissions

system (EVAP) canister

close valve (CCV) circuit

CCV to ECM drive circuit;

short circuit to ground

For EVAP system components,

Evaporative Emissions - VIN

short circuit

CCV failure

Range: G00442->G45703

P0450

Fuel tank pressure (FTP)

sensor circuit malfunction

FTP sensor disconnected

FTP sensor to ECM sensing

circuit; open circuit,
short circuit to ground,
short circuit to B+
voltage

FTP sensor to splice sensor

supply circuit; open
circuit, high resistance

FTP sensor to splice ground

circuit; open circuit,
high resistance

FTP sensor failure

For EVAP system components,

Evaporative Emissions - VIN

Range: G00442->G45703

P0452

Fuel tank pressure (FTP)

sensor circuit low voltage

(low pressure)

FTP sensor disconnected

FTP sensor to ECM sensing

circuit; open circuit,
short circuit to ground

FTP sensor to splice sensor

supply circuit; open
circuit, high resistance

FTP sensor failure

For EVAP system components,

Evaporative Emissions - VIN

Range: G00442->G45703

P0453

Fuel tank pressure (FTP)

sensor circuit high voltage

(high pressure)

FTP sensor to splice sensor

ground circuit; open
circuit, high resistance

FTP sensor to ECM sensing

circuit; short circuit to
high voltage

FTP sensor failure

For EVAP system components,

Evaporative Emissions - VIN

Range: G00442->G45703

P0455

EVAP system leak

detected - large

Fuel filler cap missing

Fuel filler cap seal defective

EVAP system leak (canister

damage, pipework
damage)

EVAP canister purge valve to

ECM drive circuit; open

For EVAP system components,

Evaporative Emissions - VIN

Range: G00442->G45703

www.

circuit, short circuit,
high resistance

EVAP canister purge valve

power supply circuit;
open circuit, short
circuit

EVAP canister purge valve to

engine purge pipe
restricted, leaking,
disconnected

EVAP canister purge valve

operating vacuum hose
leak/restriction

EVAP canister purge valve

failure

Fuel tank leak

P0456

EVAP system leak

detected - very small

(0.020)

Fuel cap seal defective

EVAP system leak (canister

damage, pipework
damage)

EVAP purge valve to ECM

drive circuit; open
circuit, short circuit,
high resistance

EVAP purge valve power

supply circuit; open
circuit, short circuit

EVAP purge valve to engine

purge pipe;
restricted/leaking

EVAP purge valve operating

vacuum hose
leak/blockage

EVAP purge valve failure

Fuel tank leak

For EVAP system components,

Evaporative Emissions - VIN

Range: G00442->G45703

P0460

Fuel level sensor circuit

range/performance

Fuel level sensor to

instrument cluster
circuits intermittent

For fuel level sensor circuit tests,

Fuel Tank and Lines - 4.2L NA V8

- AJV8/4.2L SC V8 - AJV8/3.0L NA

short or open circuit,
high resistance

Fuel level sensor failure

Instrument cluster fault

(incorrect fuel level
data)

V6 - AJ27/3.5L NA V8 - AJV8, VIN

Range: G00442->G45703

P0480

Radiator cooling fan

module drive circuit

malfunction

ECM to radiator cooling fan

module drive circuit;
short circuit, open
circuit, high resistance

Radiator cooling fan fault

Radiator cooling fan module

fault

For radiator cooling fan module

tests, GO to Pinpoint Test

G258127p19.

P0506

Idle rpm lower than

expected

Air intake restriction

Accessory drive overload

(defective/siezed
component)

Throttle valve stuck closed

Throttle body failure

Check air intake system for

restriction,

Intake Air Distribution and

Filtering - VIN Range: G00442-

>G45703 Check accessory drive

components,

Check throttle body operation,

Fuel Charging and Controls - VIN

Range: G00442->G45703

Fuel Charging and Controls - VIN

Range: G00442->G45703

P0507

Idle rpm higher than

expected

Air intake leak between

MAF sensor and throttle

Air intake leak between

throttle and engine

Engine breather leak

Throttle valve stuck open

Throttle assembly failure

Inspect air intake system.

Intake Air Distribution and

Filtering - VIN Range: G00442-

>G45703 For breather system,

Engine Emission Control - VIN

Range: G00442->G45703 For

throttle body,

Fuel Charging and Controls - VIN

Range: G00442->G45703

Fuel Charging and Controls - VIN

Range: G00442->G45703

P0532

Air conditioning pressure

sensor circuit low voltage

(high pressure)

Air conditioning pressure

sensor disconnected

Air conditioning pressure

sensor to ECM sensing
circuit; open circuit,

For A/C pressure sensor tests,

GO to Pinpoint Test

G258127p35.

For sensor supply circuit tests,

GO to Pinpoint Test

www.