2003 Honda Accord Trouble starting the car in the

P0974 OBD II Trouble Code Shift Solenoid Control Circuit High YourMechanic...

HONDA ELEMENT 2003 2006 COMPLETE WORKSHOP SERVICE MANUAL


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One thing that happens on older Hondas is that the fuel pressure bleeds off when they sit overnight. The fuel pump puts out 40 psi, and the system is supposed hold that pressure when the car is off. The check valve is weak. Then you try to start it and with no fuel pressure it takes awhile to start, and may run rough for a few seconds. To see if this is the cause, on your first start of the day, turn the key on but don't try to start it. When all the warning lights are on. The fuel pump will run for 2 seconds, then turn off. If it is quiet enough, you might hear it, or the main relay clicking off after 2 seconds. Cycle the key on for 2 seconds and then off, do this 5-6 times. Then try to start it. If it starts right up, you know the problem. Most people just accept this, because the check valve is part of the fuel pump, and this isn't cheap.

I have seen issues like this on other Honda's and the problem turned out to be the ignition starter switch. Do this, jumper power directly to the starter solenoid trigger wire and see if the engine cranks.

go to an auto parts store and have them test it.the check engine light could be a gas cap leaking. you could replace cap or o-ring,
could be a plug also.
how does the engine run. i cracked the porcelin on a plug once.
it ran terrible and the check engine light came on. i knew what it was because it didn't seem right when i put it in.
start out at the auto parts store first

hondahookup.com

looks u up for a new head soon,,,,,if u leave it to long possible new motor

If you live near an AutoZone they used to offer free check engine light diagnostics.
See what code they can retreive from the computer with their device and check it against the list of codes. It may not just be a missing Gas cap code. There are hundreds of codes computers can return.

Best Wishes.

www.techvisitor.com

90-97 accord are very known for bad ecu (computer located under the steering wheel).

D4 is an indicator that there are trouble codes stored.Trouble codes on that year Honda are pulled manually.Once the trouble codes are identified,there are diagnostic routes to follow to determine the problem.