Engine Controls - MIL ON/DTC P0456 Set

T-SB-0049-12

February 27, 2012

MIL "ON" DTC P0456

Service Category
Engine/Hybrid System

Section
Engine Control

Market
USA





Applicability

Introduction

Some 2010 - 2011 model year Camry vehicles equipped with 2AR-FE engines may exhibit a MIL "ON" condition with Diagnostic Trouble Code (DTC) P0456 - Evaporative Emission Control System Leak Detected (Very Small Leak) - when no leak is present. The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been modified to reduce the possibility of this condition occurring. Use the following repair procedure to address this condition.

If other DTCs are present in addition to P0456, this TSB does NOT apply - continue diagnosis per Repair Manual procedures.








Warranty Information





Parts Information





Calibration Information





Required Tools & Equipment

Repair Procedure

1. Using TIS Techstream check for stored DTCs. If only DTC P0456 is present proceed to step 2. If other DTCs are present this TSB does NOT apply. Continue diagnosis per Repair Manual procedures.





2. Check for the Authorized Modifications Label affixed to the vehicle in the location shown in Figure 1. Confirm if the ECM (PCM) calibration has been updated. If the calibration ID listed is NOT the latest ECM (PCM) calibration - go to step 3.

3. Flash reprogram the ECM (PCM).

NOTE

^ The GR8 Battery Diagnostic Station MUST be used in Power Supply Mode to maintain battery voltage at 13.5 volts while flash reprogramming the vehicle.

^ For details on how to use the GR8 Battery Diagnostic Station, refer to the GR8 Instruction Manual located on the Technical Information System (TIS), Diagnostics - Tools & Equipment - Battery Diagnostics.

Follow the procedures outlined in TSB No. T-SB-0064-10, "Techstream ECU Flash Reprogramming Procedure", and flash the ECM (PCM) with the NEW calibration file update.

4. Install the Authorized Modifications Label.

A. Using a permanent marker enter the following information on the label:

^ ECM part number [Refer to the Parts Information section for the CURRENT PART NUMBER]

^ Calibration ID(s) [Refer to the Calibration Identification Chart for the NEW CALIBRATION ID]

^ Dealer Code

^ Repair Date

^ Change Authority ffhis TSB number]

B. Affix the Authorized Modifications Label to the vehicle at the location shown in Figure 1. The Authorized Modifications Label is available through the MDC P/N 00451-00001-LBL.

5. Start the engine and warm it up to normal operating temperature and test drive to confirm proper vehicle operation.