MIL Comes On With DTC P0420 – 2003 Honda Element

A03-031
October 11, 2011

 

Applies To:

2003 Element with M/T – From VIN 5J6YH1…3L000001 thru 5J6YH1…3L009732

 

2003 Element: MIL Comes On With DTC P0420

(Supersedes 03-031, dated July 23, 2011, to revise the information marked by the black bars)

 

REVISION SUMMARY

Under WARRANTY CLAIM INFORMATION, a flat rate time was changed.

 

SYMPTOM

The MIL is on and DTC P0420 (catalyst system efficiency below threshold) is set.

 

PROBABLE CAUSE

Specific driving conditions may cause the ECM/PCM to incorrectly interpret sensor inputs, setting DTC P0420.

 

CORRECTIVE ACTION

Update the ECM/PCM software.

 

WARRANTY CLAIM INFORMATION

The normal warranty applies.

OP# Description FRT
123503 Retrieve the DTC and clear codes with the HDS 0.3
125517 Update the ECM/PCM software 0.3
Failed Part: P/N 37820-PZD-A02
Defect Code: 072
Contention Code: B03
Skill Level: Repair Technician

 

 

REPAIR PROCEDURE

  1. Use the HDS to clear DTC P0420.
  2. Make sure you have the iN CD (June ’03 or later) loaded into your iN master terminal. If not, load the CD using the instructions that come with it.
  3. Update the ECM/PCM software (refer to S/B 01-023, Updating Control Units/Modules).

 

 

Download (PDF, 76KB)

 


 

J2534 Software

American Honda Motor Co., Inc. offers SAE J2534 compliant reprogramming software for Honda and Acura vehicles FREE of charge. This J2534 software, when used with a properly built J2534 pass-thru device , will automatically check for the latest vehicle calibration information.

 

Important Notice

Do NOT program a control module unless you are directed by a service procedure or an applicable Honda/Acura Service Bulletin. Control Module updating should only be undertaken by a skilled professional using proper equipment and procedures, or module damage can occur. The process of updating to the latest software not associated with a specific symptom may not resolve other specific customer concerns. Unauthorized or self-directed programming may cause unintended and irreversible effects and lead to vehicle harm and/or customer dissatisfaction.

American Honda urges end users to always use the LATEST production release of the J2534 Honda Reprogramming software. Using the latest version of the software is the best way to ensure successful reprogramming of applicable control modules.

It is possible to damage the vehicle’s electronic control modules during reprogramming. Ensure the following conditions are met BEFORE programming a control module:

  • The vehicle battery must be fully charged before programming the control module. Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming.
  • Turn OFF or disable any system that may put a load on the vehicle battery.
  • Make certain all tool connections are secure. Do NOT disturb the tool harnesses while programming. If an interruption occurs during the programming procedure, programming failure or control module damage may occur.

THE ON-SCREEN REPROGRAMMING PROCEDURE MUST BE FOLLOWED EXACTLY AS OUTLINED BY THE SOFTWARE. FAILURE TO FOLLOW THESE INSTRUCTIONS WILL CAUSE THE REPROGRAMMING TO FAIL.

Some modules may require additional programming/setup events performed before or after programming. Please refer to the appropriate Service Bulletins for details. (e.g. IMA Battery Module)

The information in Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. The procedures should not be performed by “do-it-yourselfers”. American Honda reserves the right to supersede this information with updates. The most recent information is available through American Honda’s on-line technical resources.

 

Warning: Certain control module systems require special procedures and or hardware to be properly reprogrammed. Before proceeding ahead, check the vehicle list below.

Honda J2534 Pass-Thru User Guide

Honda J2534 Pass-Thru Software Download

 

techinfo.honda.com

 

 

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