Jaguar XJ (X350). Manual — part 638

P0300 Random misfire detected

ECM to ignition coil primary

circuit fault (cylinder misfire
detected DTC also flagged)

Ignition coil failure

Spark plug

failure/fouled/incorrect gap

Fuel injector circuit fault(s)

(injector DTCs also flagged)

Fuel delivery pressure high/low

Fuel injectors restricted/leaking

Fuel injectors continuously

open

Fuel contamination

Worn camshaft/broken valve

springs

For ignition system,

Engine Ignition - VIN

Range: G00442-

>G45703 For injector

circuit tests for vehicles

without supercharger,

GO to Pinpoint Test

G290117p1.

For vehicles with

supercharger, GO to

Pinpoint Test

G290117p3.

Check fuel pressure,

Fuel Tank and Lines -

3.0L/3.5L/4.2L, VIN

Range: G00442-

>G45703 For fuel

injector information,

Fuel Injectors (18.10.02)

For engine information,

Engine

P0301 Misfire detected, cylinder 1

ECM to ignition coil primary

circuit fault (cylinder misfire
detected DTC also flagged)

Ignition coil failure

Spark plug

failure/fouled/incorrect gap

Fuel injector circuit fault(s)

(injector DTCs also flagged)

Fuel delivery pressure high/low

Fuel injectors restricted/leaking

Fuel injectors continuously

open

Fuel contamination

Worn camshaft/broken valve

springs

For ignition system,

Engine Ignition - VIN

Range: G00442-

>G45703 For injector

circuit tests for vehicles

without supercharger,

GO to Pinpoint Test

G290117p1.

For vehicles with

supercharger, GO to

Pinpoint Test

G290117p3.

Check fuel pressure,

Fuel Tank and Lines -

3.0L/3.5L/4.2L, VIN

Range: G00442-

>G45703 For fuel

injector information,

Fuel Injectors (18.10.02)

For engine information,

Engine

P0302 Misfire detected, cylinder 2

ECM to ignition coil primary

circuit fault (cylinder misfire
detected DTC also flagged)

Ignition coil failure

Spark plug

failure/fouled/incorrect gap

Fuel injector circuit fault(s)

(injector DTCs also flagged)

Fuel delivery pressure high/low

Fuel injectors restricted/leaking

Fuel injectors continuously

open

Fuel contamination

Worn camshaft/broken valve

springs

For ignition system,

Engine Ignition - VIN

Range: G00442-

>G45703 For injector

circuit tests for vehicles

without supercharger,

GO to Pinpoint Test

G290117p1.

For vehicles with

supercharger, GO to

Pinpoint Test

G290117p3.

Check fuel pressure,

Fuel Tank and Lines -

3.0L/3.5L/4.2L, VIN

Range: G00442-

>G45703 For fuel

injector information,

Fuel Injectors (18.10.02)

For engine information,

Engine

P0303 Misfire detected, cylinder 3

ECM to ignition coil primary

circuit fault (cylinder misfire
detected DTC also flagged)

Ignition coil failure

Spark plug

failure/fouled/incorrect gap

Fuel injector circuit fault(s)

(injector DTCs also flagged)

Fuel delivery pressure high/low

Fuel injectors restricted/leaking

Fuel injectors continuously

open

Fuel contamination

Worn camshaft/broken valve

springs

For ignition system,

Engine Ignition - VIN

Range: G00442-

>G45703 For injector

circuit tests for vehicles

without supercharger,

GO to Pinpoint Test

G290117p1.

For vehicles with

supercharger, GO to

Pinpoint Test

G290117p3.

Check fuel pressure,

Fuel Tank and Lines -

3.0L/3.5L/4.2L, VIN

Range: G00442-

>G45703 For fuel

injector information,

Fuel Injectors (18.10.02)

For engine information,

Engine

www.

P0304 Misfire detected, cylinder 4

ECM to ignition coil primary

circuit fault (cylinder misfire
detected DTC also flagged)

Ignition coil failure

Spark plug

failure/fouled/incorrect gap

Fuel injector circuit fault(s)

(injector DTCs also flagged)

Fuel delivery pressure high/low

Fuel injectors restricted/leaking

Fuel injectors continuously

open

Fuel contamination

Worn camshaft/broken valve

springs

For ignition system,

Engine Ignition - VIN

Range: G00442-

>G45703 For injector

circuit tests for vehicles

without supercharger,

GO to Pinpoint Test

G290117p1.

For vehicles with

supercharger, GO to

Pinpoint Test

G290117p3.

Check fuel pressure,

Fuel Tank and Lines -

3.0L/3.5L/4.2L, VIN

Range: G00442-

>G45703 For fuel

injector information,

Fuel Injectors (18.10.02)

For engine information,

Engine

P0305 Misfire detected, cylinder 5

ECM to ignition coil primary

circuit fault (cylinder misfire
detected DTC also flagged)

Ignition coil failure

Spark plug

failure/fouled/incorrect gap

Fuel injector circuit fault(s)

(injector DTCs also flagged)

Fuel delivery pressure high/low

Fuel injectors restricted/leaking

Fuel injectors continuously

open

Fuel contamination

Worn camshaft/broken valve

springs

For ignition system,

Engine Ignition - VIN

Range: G00442-

>G45703 For injector

circuit tests for vehicles

without supercharger,

GO to Pinpoint Test

G290117p1.

For vehicles with

supercharger, GO to

Pinpoint Test

G290117p3.

Check fuel pressure,

Fuel Tank and Lines -

3.0L/3.5L/4.2L, VIN

Range: G00442-

>G45703 For fuel

injector information,

Fuel Injectors (18.10.02)

For engine information,

Engine

P0306 Misfire detected, cylinder 6

ECM to ignition coil primary

circuit fault (cylinder misfire
detected DTC also flagged)

Ignition coil failure

Spark plug

failure/fouled/incorrect gap

Fuel injector circuit fault(s)

(injector DTCs also flagged)

Fuel delivery pressure high/low

Fuel injectors restricted/leaking

Fuel injectors continuously

open

Fuel contamination

Worn camshaft/broken valve

springs

For ignition system,

Engine Ignition - VIN

Range: G00442-

>G45703 For injector

circuit tests for vehicles

without supercharger,

GO to Pinpoint Test

G290117p1.

For vehicles with

supercharger, GO to

Pinpoint Test

G290117p3.

Check fuel pressure,

Fuel Tank and Lines -

3.0L/3.5L/4.2L, VIN

Range: G00442-

>G45703 For fuel

injector information,

Fuel Injectors (18.10.02)

For engine information,

Engine

P0307 Misfire detected, cylinder 7

ECM to ignition coil primary

circuit fault (cylinder misfire
detected DTC also flagged)

Ignition coil failure

Spark plug

failure/fouled/incorrect gap

Fuel injector circuit fault(s)

(injector DTCs also flagged)

Fuel delivery pressure high/low

Fuel injectors restricted/leaking

Fuel injectors continuously

open

Fuel contamination

Worn camshaft/broken valve

springs

For ignition system,

Engine Ignition - VIN

Range: G00442-

>G45703 For injector

circuit tests for vehicles

without supercharger,

GO to Pinpoint Test

G290117p1.

For vehicles with

supercharger, GO to

Pinpoint Test

G290117p3.

Check fuel pressure,

Fuel Tank and Lines -

3.0L/3.5L/4.2L, VIN

Range: G00442-

>G45703 For fuel

injector information,

Fuel Injectors (18.10.02)

For engine information,

Engine

www.