Fuel System - MIL ON/DTC's P0442/P0455/P0456
T-SB-0074-10February 12, 2010
MIL "ON" DTC P0442, P0455, or P0456
Service Category
Engine/Hybrid System
Section
Engine Control
Market
USA
Applicability
Introduction
Some 2003 - 2004 model year 4Runner vehicles may exhibit a MIL "ON" condition with one or more of the following DTCs: P0442, P0455, or P0456. Use the repair procedure below to address this condition.
Parts Information
Warranty Information
APPLICABLE WARRANTY
^ 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.
^ For California specification vehicles sold, registered, and operated in California, Maine (starting with 04MY), Massachusetts, and Vermont this repair is covered under the California Emission Warranty. This warranty is in effect 36 months or 50,000 miles, whichever occurs first, from the vehicle's in-service date.
^ Warranty application is limited to occurrence of the specified condition described in this bulletin.
Required Tools & Equipment
NOTE
Additional TIS Techstream units may be ordered by calling Approved Dealer Equipment (ADE).
Repair Procedure
1. Using TIS Techstream confirm that one or more of the DTCs are set: P0442 P0455 or P0456.
2. Inspect the fuel cap.
Does it tighten properly?
^ YES - Proceed to step 3.
^ NO - Replace the fuel cap then proceed to step 4.
3. Inspect the EVAP system for the leak source.
Refer to the Technical Information System (TIS) applicable Service Bulletin or Repair Manual:
^ 2003 - 2004 4Runner Service Bulletin:
TSB No. EG048-04, "R/M Supplement: LEV II EVAP System Check - DTC P0441, P0442, P0446, P0451, P0452, P0453, P0455 & P0456"
^ 2003 / 2004 4Runner Repair Manual:
Engine/Hybrid System - Engine Control - "SFI System (2UZ-FE): P0441, P0442, P0446, P0456 Evaporative Emission Control System Leak Detected"
Was the leak source isolated at the fuel cap to filler pipe sealing area?
^ YES - Replace the fuel cap then proceed to step 4.
^ NO - This TSB does NOT apply - Refer to the Repair Manual for further diagnosis.
4. Clear DTCs. Repair is complete.