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My service light is flashing, showing code "ECU A 173.03". Brand new JD 3038e, less than 2 hours. What is it?

Nothing, other than starting it three times to see if it would simply reset.

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  • Contributor
  • 35 Answers

If not fixed above, and it is new, call your dealer.

Posted on Dec 22, 2014

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Posted on Jan 02, 2017

wireguy212
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SOURCE: JD 6310-several electrical problems- hydraulic

I may be able to help.If you can tell me what codes the tractor has stored that would be a good place to start.You can get the codes by putting a fuse in the "cal" position of the front bottom half of the fuse box,then use the signal light switch right turn signal to get to each controller.When you get to the controller you want(bcu,hcu,rcu,bif) pull back on the signal light switch(flash to pass) and the signal right one more time.Next you need to momentarily turn on then off the hazard lights.Now record the codes in each of the controllers and send them to me and we will go from there.Let me know if you can,t get this to work.

Posted on Aug 19, 2010

  • 407 Answers

SOURCE: johndeere 345 keeps quiting 1996 unit 657 hrs, pin

Sounds like an ethanol problem.Try some carb cleaner,if that wont help,rebuild on the carb would be the next step.

Posted on May 14, 2011

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1 Answer

How do i check for codes?


Turn on and off three times don't start then will flash two flashes will 2 small gaps four flashes will be 4 that mean you have code # 24.at the end will be 5 and 5 means 55 and of codes.

Apr 30, 2017 | Nissan Cars & Trucks

1 Answer

I have a JD Tractor 150 LT, It was running a few days ago and I've just tried to start it and I turn the key and nothing. the lights don't light up, nothing. I tried jumping it but still nothing.


Check the wires and make sure they are tight. You may need to try to charge the battery for a couple of hours, if it does not charge it may need a new one.

Apr 28, 2017 | Cars & Trucks

1 Answer

Autoshutdown keeps turning on


which engine???????????????????????????
ASD is tricky on jeeps.
The Auto shutdown,relay.
what is it , how does it works is covered in the fsm. read it.
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service
The ECU runs this RELAY, and if the ECU sees a gross error
it shuts this down, and the schematic there is clear as to what.
both spark and fueling.
here is what can drop it out.
1: crank sensor.
2: cam sensors or TDC ,etc.
3: sees spark dead or weak.
4: Immobilizer active. (failed)

as the book says , make sure spark is good for the 2 seconds cranking. (not after the 2seconds)
the ECU is programmed like this.
user cranks.
ECU creates spark,, using the crank/cam sensors at the time base
for 2 seconds
if the spark read back fails or the 2 sensors fail, the ecu shuts DOWN.
this is for fire prevention.
most other cars just cut the injectors, but not jeep
the drop the MAIN ASD relay.

using the check engine light flash codes, you can see which of the
3 failed, cranking for 5 second and releasing the key on all cars.
1996 and newer a scan tool is use to same effects.

now the 64,000 dollar qustion,
see page 8w-30-4
why does the ASD KILL THE IGNITION coil. easy.
1: it only guess it 2 seconds to make spark
2: if it cant,. it then drops the relay. killing fuel too.
3: this prevents the the crash and burn you see on TV.

so its 2 second permissive system. (or 3?) i forget exact seconds, its in then book and is short.
many dont know this. but is a fact.


now the flash codes.
crank for 5 seconds while in flash code mode
see emmisions page for how.

flash code 11 drops the ASD ! (cam or crank sensor dead)
code 54 cam signal dead?
code 43, spark bad.

Mar 02, 2014 | 1993 Jeep Grand Cherokee

1 Answer

3s light flashing


3s, humm...... what is that, google shows ZERO for that.
can i know what object shows that? dash, ECU, trans shift.? what?
where are your eyes looking,?
is this the ECU flash code>? LED? at ECU?

"1985-91 Prelude models, there is only one LED display."
ECU code 3 is bad MAP (or bad vacuum to it)

Carb engine or EFI engine./ and which engine?> "options"

here is the FSM , look it up , gen 2 to 5
http://hondatech.info/downloads/Auto/Manuals/Prelude/

Feb 12, 2014 | 1988 Honda Prelude

1 Answer

Flashing light #1 on the display of a 2004 recon es Honda atv


How many blinks on the 1st gear light? Here's the code definitions that should be for your quad.

Code 0 (no flashes) - The system is functioning normally
Code 1 (one flash) - Electronic control unit
Code 2 (two flashes) - Shift Switch or it's circuit
Code 3 (three flashes) - Angle sensor or it's circuit
Code 4 (four flashes) - Gear position switch or it's circuit
Code 5 (five flashes) - ECU motor circuit (defective ECU)
Code 6 (six flashes) - ECU failsafe relay circuit (defective ECU)
Code 7 (seven flashes) - ECU voltage converter circuit (defective ECU)
Code 8 (eight flashes) - Angle sensor, control motor, ECU or circuit
Code 9 (nine flashes) - Angle sensor, it's circuit or ECU
Code 10 (ten flashes) - Pulse generator or it's circuit
Code 11 (eleven flashes) - Speed Sensor , it's circuit or ECU
Code 12 (twelve flashes) - Gear position switch, it's circuit or ECU

I hope this helps you out.

Oct 08, 2013 | ATVs

1 Answer

99 grand cherokee 4.7, check engine light on. Pulled tranny codes, abs codes and ecu codes.


If the ecu has trouble codes for itself, it may be an internal problem, and the "idiot codes" would be a symptom of erratic ecu operation.
I would recommend that you take it to the dealer and pay the diagnostic fees to have it properly assessed. Then you will know for sure what the problem is with your jeep, and can go from there. If a new ecu is needed, check for a remanufactured unit or shop around at local salvage yards, if you don't want to pay the cost of a brand new unit.

Feb 06, 2013 | Jeep Cherokee Cars & Trucks

1 Answer

My xbox 360 is getting the three red lights but power bar is off


it's scaler chip is damaged, if it shows the e74 error. but if it isnt, your scaler chip is somehow getting damaged by overheating. my advice is to buy a intercooler.

Dec 10, 2009 | Microsoft Xbox 360 Console

1 Answer

Lack of power


LOTS OF THINGS!... did the CHECK ENGINE light come on? Whenever the 'CHECK ENGINE' (Service Engine Soon) light comes on, the ECU (Engine Control Unit) sets a Diagnostic Trouble Code (DTC). These codes identify the particular engine management system which caused the light to come on.
You'll need to use/find an OBDII (On-Board Diagnostic) Scanner to retrieve any code which have been stored in the ECU computer. Afterward, we might be able to help you DIAGNOSE the problem and perhaps eventually fix the problem.

Aug 25, 2009 | 1996 Hyundai Accent

1 Answer

My 200 honda recon first gear light is blinking and engine wont stay running


How many blinks on the 1st gear light? Here's the code definitions that should be for your quad. Count the flashes and look it up here. Call your dealership or local repair shop for more info and parts if you're planning on tackling it yourself.

Code 0 (no flashes) - The system is functioning normally
Code 1 (one flash) - Electronic control unit
Code 2 (two flashes) - Shift Switch or it's circuit
Code 3 (three flashes) - Angle sensor or it's circuit
Code 4 (four flashes) - Gear position switch or it's circuit
Code 5 (five flashes) - ECU motor circuit (defective ECU)
Code 6 (six flashes) - ECU failsafe relay circuit (defective ECU)
Code 7 (seven flashes) - ECU voltage converter circuit (defective ECU)
Code 8 (eight flashes) - Angle sensor, control motor, ECU or circuit
Code 9 (nine flashes) - Angle sensor, it's circuit or ECU
Code 10 (ten flashes) - Pulse generator or it's circuit
Code 11 (eleven flashes) - Speed Sensor , it's circuit or ECU
Code 12 (twelve flashes) - Gear position switch, it's circuit or ECU

I hope this helps you out.

Jun 04, 2009 | RTO 200cc Full Size Four Wheeler ATV

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