Engine Controls - MIL ON/DTCs P0301/P0305/Poss. P0300
03-033November 8, 2011
Applies To:
2004 TL - ALL
MIL Comes On With DTCs P0300, P0301, and P0305
(Supersedes 03-033, dated July 23, 2011, to update the information marked by the black bars and asterisks)
REVISION SUMMARY
*Under WARRANTY CLAIM INFORMATION, the flat rate time was changed.*
SYMPTOM
The MIL is on, and DTCs P0301 and P0305 are set. DTC P0300 (random misfire) may also be set.
PROBABLE CAUSE
The ECM/PCM software incorrectly interprets sensor inputs, causing the codes to set.
CORRECTIVE ACTION
Using the HDS, update the ECM/PCM.
WARRANTY CLAIM INFORMATION
The normal warranty applies.
Failed Part: P/N 37820-RDA-A51
Defect Code: 03214
Symptom Code: 03203
Skill Level: Repair Technician
DIAGNOSIS
Confirm the MIL is on. Using the HDS, inspect the Freeze Data and/or the on-board Snapshot Data.
Did DTCs P0301 and P0305 occur while the engine speed was over 4000 rpm?
Yes- Go to REPAIR PROCEDURE.
No- This service bulletin does not apply, continue with normal troubleshooting.
REPAIR PROCEDURE
NOTE:
^ Before you update an ECM/PCM, make sure the battery in the vehicle is fully charged.
^ To prevent ECM/PCM damage, do not operate anything electrical (audio system, brakes, A/C, power windows, moonroof, etc.) during the update.
1. Use the HDS to read and clear the DTCs.
2. Use the HDS to update the ECM/PCM:
^ If not already done, load software update 1.012.023 or later onto the HDS.
^ On the HDS screen, click on the red reprogramming icon.
^ In the System Selection menu, select PGM-FI, and click on the confirmation check mark.
^ In the screen that shows the new program, click on the confirmation check mark.
^ In the Confirm the Control Module Update screen, click Yes.
^ When the programming is complete, click on the confirmation check mark.
3. NOTE: Do not disconnect the HDS, and do not turn off the ignition switch
^ In the Updating Honda Control Modules with the HDS Tablet screen, click on the confirmation check mark.
^ Wait until the programming is complete; this programming sequence takes about 10 minutes.
4. Do the ECM/PCM idle learn procedure:
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