Question about 2003 Honda Odyssey

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2003 Honda Odyssey Code P0420 and related TCS Codes 31-2 / 61-1. Also recieved a note from dealer saying "This is AHM Position regarding P0740." They want to replace the transmission and a computer for $6000+. Really, am I doomed?

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1 Answer

PO420 is a bad exhaust converter,that tells you the motor
has not run well in years & ruined it
You don't go to a dealer to start with
Now the $6000.00 trans price should tell
you that is your last time to any dealer for
service,common sense
Go to a trans shop if you got trans issues
The other Codes you Google & read up
OBD PO740 etc

Posted on Aug 01, 2013

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Posted on Jan 02, 2017

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dsacco86
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SOURCE: P0740 code showing in my 2000 Honda Odyssey

P0740 Torque Converter Clutch Circuit Malfunction
The problem could be the torque converter itself or the sensor circuit for the clutch.
Best to have a Transmission Expert look at it to see if any further damage has occurred.

Posted on Apr 19, 2009

  • 521 Answers

SOURCE: I have a 20001 Odyssey with 70,000. The check

unfortunately it is. Contact your local dealership to see if it may still be covered under a warranty or not.

Customer Concern: The check engine light is on with the trouble code P0740 present. Tests/Procedures: 1. Test drive the vehicle and watch the tachometer. See if the automatic transmission locks up. If unable to see the RPM change, and the Engine Control Module (ECM) is turning on the lockup solenoids, then the problem has to be internal to the transmission. The transmission has an extended warranty from Honda for 7 years or 100,000 miles. Potential Causes: Automatic Transmission
Lock-Up Solenoid
Torque Converter
Tech Tips: TSB #02-062 Diagnostic Codes: P0740

Posted on Oct 10, 2009

  • 279 Answers

SOURCE: Question regarding a honda odyssey 1999 check engine light codes.

Ramon
P0420 relates to the catalytic converter. The computer sees little or no improvement in the exhaust before and after going through the converter. Either your oxygen sensors need replacement (3 total) or you need a new catalytic converter.
What is the mileage on the vehicle? Does it run well? Oxygen sensors generally start to fail after 70,000 miles. Catalytic converters usually fail because the engine is runnig rich and the owner ignores that fault for months. This causes the catalytic converter to overheat and fail.

P1456 relates to the evaporative emission system. This system holds the gas fumes in the system so they are not vented to the atmosphere. The most common cause of this code being set is failing to properly tighten the gas cap after refueling. Take the cap off and clean the sealing O-ring. Put it back on and tighten till it clicks 3 times. Make sure you have the correct gray colored gas cap. Clear the code and see if it resets within a few days. If it does, try replacing the gas cap.
Charlie

Posted on Jun 26, 2008

messstat
  • 365 Answers

SOURCE: 2001 HONDA ACCORD CODE P0740 TRANSMISSION

Horsecrap...go to an independent transmission dealer after you call the extended warranty folks and complain!
I can count the number of Honda transmissions that go bad before 300,000 miles on one hand.
Good Luck

Posted on Jun 22, 2009

  • 1 Answer

SOURCE: tcs light and engine check light on my 2000 honda odyssey

I had the same code/symptoms a few weeks ago. Dealer did a nice job checking through all the details. Replaced the egr too, but no improvement. Finally found one cylinder not firing correctly (not the same pressure as the other cylinders.) Dealer did a value clean/adjustment, for about $250, and the problem has been gone for about a month now. We are also getting about 15% better mileage.

Hope this helps.

Posted on Sep 09, 2009

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2 Answers

My 2001 Honda Odyssey is saying I have trouble codes p0108,p0122,p0740,p0780,p0300 what causes all these trouble codes what is the problem with it please help


Google the codes individually
you have multiple problems
some of the codes caused because of the others
740,780 is from your trani
300 random multiple miss fire
108 map sensor issue need to be diagnosed
122 trottle position sensor malfunction

Apr 23, 2015 | 2001 Honda Odyssey

1 Answer

2000 Honda Odysee P0300 - P0306 and P0740, TCS all at once.


You can get a reman trans for about $2500 or rebuild yours
for $1700 locally

The misfire could be spark plugs & a couple of ignition coils
you do for $100

Egr about $80 you do

You need the trans diagnosed at a trans shop & road tested

Nov 22, 2012 | 2000 Honda Odyssey

1 Answer

My honda odyssey 2003 model has aq knock sensor circuit malfunction problem detected by the computer, also the engine light is always on, and the TCS light showing when i am in motion. how do i correct...


The tcs light will come on whenever the engine light is on, this is because the tcs cant operate correctly when engine is not running good so its shut down by the computer, the code if the only code means there a problem with the knock sensor, you will need to check the connection and make sure the wire is good and if it is then you will need to replace the knock sensor, heres a diagram to help you locate the knock sensor good luck, hope this helps,johnjohn2_69.gif

Feb 20, 2011 | 2003 Honda Odyssey

2 Answers

2000 honda odyssey, sputtering and pinging, hesitating, check engine light w/ tcs light.....???


The following is from the Honda Odyssey (1999-2004) Service Manual page 19-81:

"When the Malfunction Indicator Light (MIL or check engine light) and the Traction Control System (TCS) light are both on at the same time, you should troubleshoot the Programmed Fuel Injection (PGM-FI) system first."

"The TCS indicator will come on if one or more of the following components are faulty:
heated oxygen sensor, manifold absolute pressure sensor, crankshaft position sensor, engine coolant temp. sensor, throttle position sensor, top dead center sensor 1 or 2, intake air temp. sensor, exhaust gas recirculation, barometric pressure sensor, idle air control valve, VTEC pressure switch, knock sensor, fuel supply system, automatic transaxle, and misfire detection system of the PGM-FI system."

Most major auto parts stores have a code reader that will read out your diagnostic trouble codes or DTC's that are stored in the car's computer when the MIL comes on. They will do it for free. With these codes, you can narrow down what is wrong. This is good information to have if you are dealing with a mechanic or dealership. The terminal to hook up the code reader is under the driver's side dash about in line with your right shin.

Feb 01, 2011 | 2000 Honda Odyssey

1 Answer

How I fix when egine light n tcs light on when code is 740 how I fix that


If you over 100,000 miles handa says replace the trans if your under you may be under warranty.


DTC P0740: Problem in Lock-up Control System

As per Honda Service Bulletin 02-062 (January 5, 2007), DTC P0740 testing procedures have been replaced by the following:

Got an A/T DTC 0740? Don't Replace the Solenoids
If you're troubleshooting a '99-04 Odyssey for an A/T DTC P0740 (lock-up control system), don't replace the TCC, shift, or linear A/B solenoids if the A/T has more than 10,000 miles racked up. What's most likely causing this DTC is low line pressure resulting from the inlet screen being clogged with clutch material. To fix this problem, see additional information below, and replace the A/T.

May 17, 2010 | 2003 Honda Odyssey

1 Answer

I have a 20001 Odyssey with 70,000. The check engine light and TCS light both came on. The TCS light has since gone out but the check engine remains. I went to an auto parts store and their computer came...


unfortunately it is. Contact your local dealership to see if it may still be covered under a warranty or not.

Customer Concern: The check engine light is on with the trouble code P0740 present. Tests/Procedures: 1. Test drive the vehicle and watch the tachometer. See if the automatic transmission locks up. If unable to see the RPM change, and the Engine Control Module (ECM) is turning on the lockup solenoids, then the problem has to be internal to the transmission. The transmission has an extended warranty from Honda for 7 years or 100,000 miles. Potential Causes: Automatic Transmission
Lock-Up Solenoid
Torque Converter
Tech Tips: TSB #02-062 Diagnostic Codes: P0740

Oct 10, 2009 | 2001 Honda Odyssey

2 Answers

Tcs light and engine check light on my 2000 honda odyssey


I had the same code/symptoms a few weeks ago. Dealer did a nice job checking through all the details. Replaced the egr too, but no improvement. Finally found one cylinder not firing correctly (not the same pressure as the other cylinders.) Dealer did a value clean/adjustment, for about $250, and the problem has been gone for about a month now. We are also getting about 15% better mileage.

Hope this helps.

Aug 03, 2009 | 2001 Honda Odyssey

1 Answer

2001 HONDA ACCORD CODE P0740 TRANSMISSION


Horsecrap...go to an independent transmission dealer after you call the extended warranty folks and complain!
I can count the number of Honda transmissions that go bad before 300,000 miles on one hand.
Good Luck

Jun 22, 2009 | Honda Odyssey Cars & Trucks

1 Answer

Honda Odyssey with 101,800. Maintained


With regard to the Transmission, some Honda's have strict procedures to follow with their trany's.
I hope you never had it flushed by a Quick lube or something like that. Also the type of fluid is very special in some of them too so mixing them with regular ATF will cause problems. I worked for a Forein Car Specialist and know how important it is to use only the Honda recommended fluids in them. If the light went out you can reset the code and see if it returns, if it does you may want a reputable shop to professionaly flush your tranny and replace the oil with Honda recommended oil.
With regards to your Catalytic converter, unless you can hear it comming apart inside (bang on it and listen if it rattles) or if the car is running extremly rich (gas will ruin the cat) you may have a blocked or ruined muffler farther down the system which is slowing the flow through the cat.
I hope this helps.
Regards
Sam

May 12, 2009 | 2001 Honda Odyssey

2 Answers

P0740 code showing in my 2000 Honda Odyssey


P0740 Torque Converter Clutch Circuit Malfunction
The problem could be the torque converter itself or the sensor circuit for the clutch.
Best to have a Transmission Expert look at it to see if any further damage has occurred.

Apr 19, 2009 | 1999 Honda Odyssey

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