Toyota Tundra (2015 year). Manual — part 1561
NEXT
(a) Check for exhaust gas leaks from the exhaust manifold assembly and exhaust pipes.
OK:
No gas leaks.
OK
GO TO STEP 9
NG
GO TO STEP 8
6.
CHECK FOR EXHAUST GAS LEAK
(a) Check for exhaust gas leaks from the exhaust manifold assembly and exhaust pipes.
OK:
No gas leaks.
OK
GO TO STEP 10
NG
GO TO STEP 8
7.
REPLACE AIR FUEL RATIO SENSOR
(a) Replace the air fuel ratio sensor
.
NEXT
GO TO STEP 11
8.
REPAIR OR REPLACE FOR EXHAUST GAS LEAK POINT
(a) Repair or replace exhaust gas leak point.
NEXT
GO TO STEP 11
9.
REPLACE HEATED OXYGEN SENSOR
(a) Replace the heated oxygen sensor
.
NEXT
GO TO STEP 11
10.
CHECK CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR-FUEL RATIO
.
11.
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream ON.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0420,P043...
A
(d) Clear the DTCs
.
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Start the engine.
(g) Turn the Techstream on.
(h) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(i) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(j) Read the DTCs.
Result
RESULT
PROCEED TO
DTC P0420 and/or P0430 is output
A
DTC is not output
B
B
END
12.
CHECK DTC OUTPUT (DTC P0420 AND/OR P0430)
NOTICE:
When DTC P0420 is output, replace the front No. 2 exhaust pipe assembly (TWC: Front catalyst and rear catalyst) when
catalyst replacement is necessary.
When DTC P0430 is output, replace the front exhaust pipe assembly (TWC: Front catalyst and rear catalyst) when catalyst
replacement is necessary.
HINT:
Confirm the replacement parts, referring to the illustration in the Catalyst Location.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream ON.
(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(e) Read the DTCs.
Result
RESULT
PROCEED TO
DTC P0420 is output
A
DTC P0430 is output
B
DTC P0420 and P0430 are output
A and B
B
REPLACE FRONT EXHAUST PIPE ASSEMBLY (TWC: FRONT CATALYST
AND REAR CATALYST)
A
REPLACE FRONT NO. 2 EXHAUST PIPE ASSEMBLY (TWC: FRONT
CATALYST AND REAR CATALYST)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0420,P043...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000TMD0DWX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0420,P0430; Catalyst System Efficiency Below Threshold (Bank 1); 2015
MY Tundra [08/2014 - ]
DTC
P0420
Catalyst System Efficiency Below Threshold (Bank 1)
DTC
P0430
Catalyst System Efficiency Below Threshold (Bank 2)
MONITOR DESCRIPTION
(HO2) sensor, sends post-catalyst information to the ECM.
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
P0420
OSC value smaller than standard value under active
air-fuel ratio control
(2 trip detection logic)
Gas leakage from exhaust system
Air-Fuel Ratio (A/F) sensor (for Bank 1 Sensor 1)
Heated Oxygen (HO2) sensor (for Bank 1 Sensor 2)
Front No. 2 exhaust pipe assembly (TWC: Front
Catalyst and Rear Catalyst)
Fuel pressure switching valve
Fuel pressure regulator
Fuel pressure regulator for high pressure
P0430
OSC value smaller than standard value under active
air-fuel ratio control
(2 trip detection logic)
Gas leakage from exhaust system
Air-Fuel Ratio (A/F) sensor (for Bank 2 Sensor 1)
Heated Oxygen (HO2) sensor (for Bank 2 Sensor 2)
Front exhaust pipe assembly (TWC: Front Catalyst and
Rear Catalyst)
Fuel pressure switching valve
Fuel pressure regulator
Fuel pressure regulator for high pressure
CATALYST LOCATION
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0420,P043...
NOTICE:
When DTC P0420 is output, replace the front No. 2 exhaust pipe assembly when catalyst replacement is necessary. (Excluding
air fuel ratio sensor and heated oxygen sensor)
When DTC P0430 is output, replace the front exhaust pipe assembly when catalyst replacement is necessary. (Excluding air
fuel ratio sensor and heated oxygen sensor)
MONITOR STRATEGY
Related DTCs
P0420: Catalyst Deterioration (for Bank 1)
P0430: Catalyst Deterioration (for Bank 2)
Required Sensors/Components
(Main)
A/F sensor and HO2 sensor
Required Sensors/Components
(Related)
Intake air temperature sensor, mass air flow meter, crankshaft position sensor and engine
coolant temperature sensor
Duration
About 30 seconds
MIL Operation
2 driving cycles
TYPICAL ENABLING CONDITIONS
Monitor runs whenever
following DTCs not present
P0010, P0020 (Camshaft Timing Oil control valve)
P0011, P0021 (VVT System - Advance)
P0012, P0022 (VVT System - Retard)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0420,P043...
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