Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2006SEQUOIA 4WD V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSCUSTOMER INTERESTENGINE CONTROLS - MIL ON DTC P0418 P2445
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)
Engine Controls - MIL On DTC P0418 P2445
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)SECTION Engine Controls - MIL On DTC P0418 P2445
ENGINE
EG027-07
Title:
M.I.L. "ON" DTC P0418 AND/OR P2445
Models:
'05 - '07 Sequoia & '05 - '06 Tundra (2UZ-FE)
May 15, 2007
Introduction
Some 2005 - 2007 model year Sequoia and 2005 - 2006 model year Tundra vehicles may exhibit a M.l.L. ON" with DTC P0418 and/or P2445. This may be caused by the air injection control driver. Please use the following repair procedure to address the customer's concern.
Applicable Vehicles
^ 2005 - 2007 model year Sequoia vehicles produced BEFORE the Production Change Effective VINs shown below.
^ 2005 - 2006 model year Tundra vehicles equipped with the 2UZ-FE engine.
Production Change Information
Parts Information
Warranty Information
^ This repair is covered under the Toyota Federal Emission Warranty. This warranty is in effect for 36 months or 36,000 miles, whichever occurs first, from the vehicle's in-service date.
^ This repair is covered under the California Emission Warranty. This warranty is in effect for 36 months or 50,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Required SSTs
Repair Procedure
1. Using the Diagnostic Tester, check for Diagnostic Trouble Codes (DTCs). If P0418 and/or P2445 are present, replace the injection driver.
2. If DTC P0418 and/or P2445 are still present after replacing the air injection driver, inspect the air injection system.
Refer to the Technical Information System (TIS):
2005 model year Sequoia Repair Manual:
^ Engine/Hybrid System - Engine Control - "Engine: P0418 Air Injection System Air Pump Malfunction"
^ Engine/Hybrid System - Engine Control - "Engine: P2444, P2445 Secondary Air Injection System Pump Stuck Off Bank 1"
^ 2006 or 2007 model year Sequoia Repair Manual:
^ Engine/Hybrid System - Engine Control - "2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418: Secondary Air Injection System Control "A" Circuit"
^ Engine/Hybrid System - Engine Control - "2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444: Secondary Air Injection System Pump Stuck on Bank 1"
^ 2005 model year Tundra Repair Manual:
^ Engine/Hybrid System - Engine Control - "2UZ- FE: Engine: P0418 Air Injection System Air Pump Malfunction"
^ Engine/Hybrid System - Engine Control - "2UZ-FE: Engine: P2444, P2445 Secondary Air Injection System Pump Stuck Off Bank 1"
^ 2006 model year Tundra Repair Manual:
^ Engine/Hybrid System - Engine Control - "2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418: Secondary Air Injection System Control "A" Circuit"
^ Engine/Hybrid System - Engine Control - "2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444: Secondary Air Injection System Pump Stuck on Bank 1"
EG027-07
Title:
M.I.L. "ON" DTC P0418 AND/OR P2445
Models:
'05 - '07 Sequoia & '05 - '06 Tundra (2UZ-FE)
May 15, 2007
Introduction
Some 2005 - 2007 model year Sequoia and 2005 - 2006 model year Tundra vehicles may exhibit a M.l.L. ON" with DTC P0418 and/or P2445. This may be caused by the air injection control driver. Please use the following repair procedure to address the customer's concern.
Applicable Vehicles
^ 2005 - 2007 model year Sequoia vehicles produced BEFORE the Production Change Effective VINs shown below.
^ 2005 - 2006 model year Tundra vehicles equipped with the 2UZ-FE engine.
Production Change Information
Parts Information
Warranty Information
^ This repair is covered under the Toyota Federal Emission Warranty. This warranty is in effect for 36 months or 36,000 miles, whichever occurs first, from the vehicle's in-service date.
^ This repair is covered under the California Emission Warranty. This warranty is in effect for 36 months or 50,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Required SSTs
Repair Procedure
1. Using the Diagnostic Tester, check for Diagnostic Trouble Codes (DTCs). If P0418 and/or P2445 are present, replace the injection driver.
2. If DTC P0418 and/or P2445 are still present after replacing the air injection driver, inspect the air injection system.
Refer to the Technical Information System (TIS):
2005 model year Sequoia Repair Manual:
^ Engine/Hybrid System - Engine Control - "Engine: P0418 Air Injection System Air Pump Malfunction"
^ Engine/Hybrid System - Engine Control - "Engine: P2444, P2445 Secondary Air Injection System Pump Stuck Off Bank 1"
^ 2006 or 2007 model year Sequoia Repair Manual:
^ Engine/Hybrid System - Engine Control - "2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418: Secondary Air Injection System Control "A" Circuit"
^ Engine/Hybrid System - Engine Control - "2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444: Secondary Air Injection System Pump Stuck on Bank 1"
^ 2005 model year Tundra Repair Manual:
^ Engine/Hybrid System - Engine Control - "2UZ- FE: Engine: P0418 Air Injection System Air Pump Malfunction"
^ Engine/Hybrid System - Engine Control - "2UZ-FE: Engine: P2444, P2445 Secondary Air Injection System Pump Stuck Off Bank 1"
^ 2006 model year Tundra Repair Manual:
^ Engine/Hybrid System - Engine Control - "2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418: Secondary Air Injection System Control "A" Circuit"
^ Engine/Hybrid System - Engine Control - "2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444: Secondary Air Injection System Pump Stuck on Bank 1"
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.