p 0420 JAGUAR X308 1998 2.G Workshop Manual

KS fail
ure
P0335Cranksh
a
ft positi
on (CKP) sensor
circuit malfunction
CK P
sensor disconnected
CKP sensor air gap
i
n
correct/foreign matter on face
CKP sensor sen
s
ing circuit open
circuit, short circuit to ground,
short circuit to high voltage
CKP s e
nsor failure
F
or CKP sensor circ ui
t tests,GO to
Pinpoint Test N.
.
P0340Camshaft position
(CMP) sensor
circuit malfunction
CM P
sensor disconnected
CMP sensor air gap
i
n
correct/foreign matter on face
CMP sensor sen
s
ing circuit open
circuit, short circuit to ground,
short circuit to high voltage
CMP s e
nsor failure
F
or CMP sensor circ ui
t tests,GO to
Pinpoint Test O.
.
P0351Igniti
on coil primary/secondary
circuit malfunction, cyl 1
ECM to ignit
ion module primary
circuit open circuit, short circuit to
ground, high resistance
Igniti
on module to ignition coil
primary circuit open circuit, short
circuit to ground, high resistance
Ignition modu le
ground circuit
open circuit, hi gh resistance
Ignition coil fail
ure
Ignition modul
e
failure
F
o
r ignition circuit tests,
REFER to Section 303
-07 En
gine
Ignition. P0352Ignit
i
on coil primary/secondary
circuit malfunction, cyl 3
P0353Ignit i
on coil primary/secondary
circuit malfunction, cyl 5
P0354Ignit i
on coil primary/secondary
circuit malfunction, cyl 7
P0355Ignit i
on coil primary/secondary
circuit malfunction, cyl 2
P0356Ignit i
on coil primary/secondary
circuit malfunction, cyl 4
P0357Ignit i
on coil primary/secondary
circuit malfunction, cyl 6
P0358Ignit i
on coil primary/secondary
circuit malfunction, cyl 8
P0400Exhaus t gas
recirculation (EGR)
flow malfunction
EGR valve c
onnector pins high
resistance
EGR pipe/exhaust manifol
d leak
EGR pipe blocke

d
EGR valve st

uck open/closed,
blocked
EGR valve fai
lure
For EGR
pinpoint t
ests,
REFER to Section 303
-08 En
gine
Emission Control.
P0405Exhaus
t gas
recirculation (EGR)
drive circuits open circuit
EGR valve power supply circuit
o p
en circuit
EGR valve t
o
ECM drive circuit pair
- EGR pins 1/3, 4/6 open circuit,
high resistance
EGR val v
e failure (stepper motor
open circuit)
For EGR pinpoint t
ests,
REFER to Section 303
-08 En
gine
Emissi
on Control.
P0406Exhaus t gas
recirculation (EGR)
drive circuits short circuit
EGR valve t o
ECM drive circuit pair
- EGR pins 1/3, 4/6 short circuit to
ground or high voltage
EGR val v
e failure (stepper motor
short circuit)
For EGR pinpoint t
ests,
REFER to Section 303
-08 En
gine
Emissi
on Control.
P0420Right-
hand catalytic converter
efficiency below threshold
HO2S di
sconnected.
HO2
S
to ECM wiring fault.
HO2
S
heater to ECM wiring fault.
HO2
S
heater failure.
HO2
S
failure.
Cat
a
lyst monitor sensor failure.
Catal
y
tic converter failure.
R
e
fer to pinpoint tests for components

listed. Visually inspect catalytic
converters.
P0442Evaporati v
e emissions system
(EVAP) leak detected
Fue l
filler cap missing
Fu

el filler cap seal faulty
EVAP system
leak (can
ister
damage, pipework damage)
EVAP v a
lve to ECM drive circuit
open circuit, short circuit, high
resistance
EVAP valve to engine pu rge pipe
damaged/blocked/leaking
EVAP ope r
ating vacuum hose
F
or evaporati
ve emissions pinpoint
tests,
REFER to Section 303
-1 3
Evaporative

Emissi
ons
.

Exhaust System - Exhaust System
Diagnosis and Testing
Symptom Chart
Symptom Chart
Special Tool(s)

Digital multimeter

Generic scantool
SymptomPossible SourcesAction
DTC P0420 Catalyst system efficiency below
threshold (Bank 1)Catalyst failure
Upstream O2 sensor failure
Downstream O2 sensor failure
O2 sensor heater failure
Associated harness / connector failure
*
*
*
*
*See DTC P0137, P0138
and P0140
*
DTC P0430 Catalyst system efficiency below
threshold (Bank 2)Catalyst failure
Upstream O2 sensor failure
Downstream O2 sensor failure
O2 sensor heater failure
Associated harness / connector failure
*
*
*
*
*See DTC P0157, P0158
and P0160
*
DTC P0131 O2 sensor circuit low voltage (Bank 1
sensor 1)O2 sensor failure
Sensor ground fault
Harness failure
Connector pin(s) bent, loose or corroded
*
*
*
*GO to Pinpoint Test A
*
DTC P0132 O2 sensor circuit high voltage (Bank
1 sensor 1)O2 sensor failure to B+
Sensor ground fault
Harness failure
Connector pin(s) bent or tracking
between connections. O2 sensor failure
*
*
*
*
*GO to Pinpoint Test A
*
DTC P0133 O2 sensor circuit slow response
(Bank 1 sensor 1)O2 sensor heater failure / out of spec
Sensor ground fault
Harness failure
Connector pin(s) bent or tracking
between connections. Low exhaust temperature
O2 sensor failure
*
*
*
*
*
*GO to Pinpoint Test B
*
DTC P0135 O2 sensor heater circuit malfunction
(Bank 1 sensor 1)O2 sensor failure
Harness failure
Connector pin(s) bent or tracking
between connections. ECM failure
*
*
*
*GO to Pinpoint Test A
*
DTC P0137 O2 sensor circuit low voltage (Bank 1
sensor 2)O2 sensor failure
Sensor ground fault
Harness failure
Connector pin(s) bent, loose or corroded
*
*
*
*GO to Pinpoint Test C
*
DTC P0138 O2 sensor circuit high voltage (Bank
1 sensor 2)O2 sensor failure to B+
Sensor ground fault
Harness failure
Connector pin(s) bent or tracking
*
*
*
*GO to Pinpoint Test C
*

Pinpoint test A: P0131, P0132, P0135
between connections. ECM failure
*
DTC P0140 O2 sensor circuit no activity detected
(Bank 1 sensor 2)O2 sensor failure / out of spec
Sensor ground fault
Harness failure
Connector pin(s) bent or tracking
between connections. Low exhaust temperature
*
*
*
*
*GO to Pinpoint Test D
*
DTC P0420 Catalyst system efficiency below
threshold (bank 1)Downstream O2 sensor failure
Catalyst failure
Catalyst low temperature caused by
water splash
*
*
*GO to Pinpoint Test C
GO to Pinpoint Test D
*
*
DTC P0151 O2 sensor circuit low voltage (Bank 2
sensor 1)O2 sensor failure
Sensor ground fault
Harness failure
Connector pin(s) bent, loose or corroded
*
*
*
*GO to Pinpoint Test E
*
DTC P0152 O2 sensor circuit high voltage (Bank
2 sensor 1)O2 sensor failure to B+
Sensor ground fault
Harness failure
Connector pin(s) bent or tracking
between connections. O2 sensor failure
*
*
*
*
*GO to Pinpoint Test E
*
DTC P0153 O2 sensor circuit slow response
(Bank 2 sensor 1)O2 sensor heater failure / out of spec
Sensor ground fault
Harness failure
Connector pin(s) bent or tracking
between connections. Low exhaust temperature
O2 sensor failure
*
*
*
*
*
*GO to Pinpoint Test F
*
DTC P0155 O2 sensor heater circuit malfunction
(Bank 2 sensor 1)O2 sensor failure
Harness failure
Connector pin(s) bent or tracking
between connections. ECM failure
*
*
*
*GO to Pinpoint Test E
*
DTC P0157 O2 sensor circuit low voltage (Bank 2
sensor 2)O2 sensor failure
Sensor ground fault
Harness failure
Connector pin(s) bent, loose or corroded
*
*
*
*GO to Pinpoint Test G
*
DTC P0158 O2 sensor circuit high voltage (Bank
2 sensor 2)O2 sensor failure to B+
Sensor ground fault
Harness failure
Connector pin(s) bent or tracking
between connections. ECM failure
*
*
*
*
*GO to Pinpoint Test G
*
DTC P0160 O2 sensor circuit no activity detected
(Bank 2 sensor 2)O2 sensor failure / out of spec
Sensor ground fault
Harness failure
Connector pin(s) bent or tracking
between connections. Low exhaust temperature
*
*
*
*
*GO to Pinpoint Test H
*
DTC P0430 Catalyst system efficiency below
threshold (bank 2)Downstream O2 sensor failure
Catalyst failure
Catalyst low temperature caused by
water splash
*
*
*GO to Pinpoint Test G
GO to Pinpoint Test H
*
*
PINPOINT TEST A : P0131, P0132, P0135
TEST CONDITIONSDETAILS/RESULTS/ACTIONS
A1: RETRIEVE DTCS
• NOTE: Battery and or ECM disconnection prior to scanning wi
ll erase all data, ensure that the correct DTC is present.