–DIAGNOSTICS ENGINE
DI–15
2000 CELICA (RM744U)
P0136
(DI–58)
Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 2)
SOpen or short in heated oxygen sensor circuit
SHeated oxygen sensor
f f
P0141
(DI–56)
Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 2)
SSame as DTC No. P0135 f f
P0171
(DI–60)
System too Lean (Fuel Trim)
SAir induction system
SInjector blockage
SMass air flow meter
SEngine coolant temp. sensor
SFuel pressure
SGas leakage on exhaust system
SOpen or short in heated oxygen sensor (bank 1 sensor 1)
circuit
SHeated oxygen sensor (bank 1 sensor 1)
f f
P0172
(DI–60)
System too Rich (Fuel Trim)
SInjector leak, blockage
SMass air flow meter
SEngine coolant temp. sensor
SIgnition system
SFuel pressure
SGas leakage on exhaust system
SOpen or short in heated oxygen sensor (bank 1 sensor 1)
circuit
SHeated oxygen sensor (bank 1 sensor 1)
f f
P0300
(DI–64)
Random/Multiple Cylinder Misfire
Detected
SOpen or short in engine wire
SConnector connection
P0301
(DI–64)
Cylinder 1 Misfire Detected
SVacuum hose connection
SIgnition system
SInjector
P0302
(DI–64)
Cylinder 2 Misfire Detected
SFuel pressure
SEGR system
S
p
f f
P0303
(DI–64)
Cylinder 3 Misfire Detected
S
SEngine coolant temp. sensor
SCompression pressure
P0304
(DI–64)
Cylinder 4 Misfire Detected
SValve clearance
SValve timing
SECM
P0325
(DI–71)
Knock Sensor 1 Circuit Malfunc-
tion (Bank 1)
SOpen or short in knock sensor 1 circuit
SKnock sensor 1 (looseness)
SECM
f f
P0335
(DI–74)
Crankshaft Position Sensor ”A”
Circuit Malfunction
SOpen or short in crankshaft position sensor circuit
SCrankshaft position sensor
SSignal plate (Timing belt guide)
SCrankshaft timing pulley
SECM
f f
P0340
(DI–76)
Camshaft Position Sensor Cir-
cuit Malfunction
SOpen or short in camshaft position sensor circuit
SCamshaft position sensor
SCamkshaft timing pulley
SECM
f f
P0420
(DI–78)
Catalyst System Efficiency Be-
low Threshold (Bank 1)
SGas leakage on exhaust system
SOpen or short in heated oxygen sensor circuit
SHeated oxygen sensor
SThree–way catalytic converter
f f
