Jaguar XJ (X350). Manual — part 624

P0205

Fuel injector circuit

malfunction, Cyl 5

•

Injector disconnected

•

Injector wiring open or
short circuit

•

Injector failure

For fuel injectors,

Fuel Injectors (18.10.02)

For fuel injector circuit

tests, GO to Pinpoint Test

G206886p1.

.

P0206

Fuel injector circuit

malfunction, Cyl 6

•

Injector disconnected

•

Injector wiring open or
short circuit

•

Injector failure

For fuel injectors,

Fuel Injectors (18.10.02)

For fuel injector circuit

tests, GO to Pinpoint Test

G206886p1.

.

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, <<303-

07>> For injector circuit

tests, GO to Pinpoint Test

G206886p1.

. Check fuel pressure,

<<310-01>> For fuel

injectors,

Fuel Injectors (18.10.02)

For engine information,

<<303-01>>

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

For ignition system, <<303-

07>> For injector circuit

tests, GO to Pinpoint Test

G206886p1.

. Check fuel pressure,

<<310-01>> For fuel

injectors,

Fuel Injectors (18.10.02)

For engine information,

<<303-01>>

open

•

Fuel contamination

•

Worn camshaft/broken
valve springs

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, <<303-

07>> For injector circuit

tests, GO to Pinpoint Test

G206886p1.

. Check fuel pressure,

<<310-01>> For fuel

injectors,

Fuel Injectors (18.10.02)

For engine information,

<<303-01>>

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, <<303-

07>> For injector circuit

tests, GO to Pinpoint Test

G206886p1.

. Check fuel pressure,

<<310-01>> For fuel

injectors,

Fuel Injectors (18.10.02)

For engine information,

<<303-01>>

P0304 Misfire detected, cylinder 4

•

ECM to ignition coil
primary circuit fault
(cylinder misfire detected
DTC also flagged)

•

Ignition coil failure

For ignition system, <<303-

07>> For injector circuit

tests, GO to Pinpoint Test

G206886p1.

www.

•

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

. Check fuel pressure,

<<310-01>> For fuel

injectors,

Fuel Injectors (18.10.02)

For engine information,

<<303-01>>

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, <<303-

07>> For injector circuit

tests, GO to Pinpoint Test

G206886p1.

. Check fuel pressure,

<<310-01>> For fuel

injectors,

Fuel Injectors (18.10.02)

For engine information,

<<303-01>>

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

For ignition system, <<303-

07>> For injector circuit

tests, GO to Pinpoint Test

G206886p1.

. Check fuel pressure,

<<310-01>> For fuel

injectors,

Fuel Injectors (18.10.02)

For engine information,

<<303-01>>

open

•

Fuel contamination

•

Worn camshaft/broken
valve springs

P0460

Fuel level sensor circuit

range/performance

•

Fuel level sensor to rear
electronic control module
circuit(s); intermittent
short circuit, open circuit,
high resistance

•

Fuel level sensor failure

•

Rear electronic control
module fault (incorrect fuel
level data)

For fuel level sensor and

circuit tests, <<310-01>>

P1224

Throttle control position

error

•

Throttle motor failure

•

Throttle body failure

This DTC can only be

accurately diagnosed using

the Jaguar approved

diagnostic system. If this is

not available, INSTALL a

new throttle body.

Throttle Body - VIN Range:

G00442->G45703

(19.70.04) CLEAR the DTC,

TEST the system for normal

operation.

P1229

Throttle motor control

circuit malfunction

•

Throttle motor
disconnected

•

Throttle motor to ECM
drive circuits; short circuit
or open circuit

•

ECM ground circuit fault(s)
(EM80-04, 05, 54)

•

Throttle motor failure

•

Throttle body failure

For throttle motor and

circuit tests, and for ECM

ground tests, <<303-14>>

For throttle body,

Throttle Body - VIN Range:

G00442->G45703

(19.70.04)

P1234

No fuel pump commands

received by ECM

•

ECM to fuel pump module
drive circuit; open circuit,
short circuit, high
resistance

•

Fuel pump module failure

For fuel pump module

circuit tests, <<310-01>>

P1236

Fuel pump not activated

when requested by ECM

•

ECM to fuel pump module
drive circuit; open circuit,
short circuit, high
resistance

For fuel pump module

circuit tests, <<310-01>>

www.