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Code U0401 showing 2009 Chevy aveo

Took to advance parts and that,s the code along with u0401

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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bschilz
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SOURCE: I can't open the gas door on my chevy aveo.

To open the fuel filler door, pull up on the release lever with a gas pump symbol on it. It is located on the floor on the left side of the driver's seat.

Please leave feedback if this helped. Thanks!

Posted on Sep 30, 2009

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SOURCE: 2004 chevy aveo radio code

if you have the manual then look in the index of it and look for radio and it should be in there

Posted on Apr 05, 2010

  • 108 Answers

SOURCE: 2004 chevy aveo

There is only 2 options.

1. Your radio code is in your paperwork for your car (Its on a hard plastic card) Find it.

2. Take your registration to Vin and Ser Number for your radio to your local dealer.

These codes are a guarded secret and no one code fits all.


Hope this tip helps guide you in the correct direction to solve this problem.

Posted on Apr 11, 2010

Testimonial: "as your information was very helpful but I dont have the paperwork or card and dealer want $75.00 to fix problem. thanks very muvh."

Autotroubles
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SOURCE: must I use synthetic oil

No its not a must.

Posted on Mar 03, 2011

ZJLimited
  • 17970 Answers

SOURCE: 2009 Chevy Aveo with computer

A code P0172 may mean that one or more of the following has happened:
* The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters can cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
* There could be a vacuum leak.
* There could be a fuel pressure or delivery problem


Some possible solutions include:
* Inspect all vacuum and PCV hoses, replace if necessary
* Cleanthe MAF sensor. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
* Inspect fuel lines for cracks, leaks, or pinches
* Check the fuel pressure at the fuel rail
* Check the fuel injectors, they may be dirty. Use fuel injector cleaner or get them professionally cleaned/replaced.
* Check for an exhaust leak before the first oxygen sensor (this is unlikely to cause the problem, but it is possible)


Hope helps.

Posted on Apr 29, 2011

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2 Answers

2006grandcherokee, u0401,code came up on a diagnostic tool at orileys. What does it mean and what can I do. Ty


I wonder if o rileys dignostic tool can read jeep fault codes

pop into a jeep service division for a code read

o rileys code suggests ECU or ecu powertrain module
cant communicate with diagnostic tool

U0401 OBD II Trouble Code Jeep

287df9d6-6e96-4d77-82a1-ac6230b67552.jpg

Mar 05, 2017 | Cars & Trucks

1 Answer

Shift light flashing no OD Changed Trans ecm/pcm shift hold light button, coil No change. CYL missfire, 2 & 3 Diagnostics code on Trans is u0401 Invalid data received from ecm/pcm/a


Circuit Description
Modules that are connected to the shared communication circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have pre-recorded information about what messages are needed to be exchanged on the serial data circuits for each virtual network. The messages are usually supervised and some periodic messages are used by the receiver module as an availability indication of the transmitter module.

DTC U0401 TCM received invalid data from ECM
Conditions for Setting the DTC
The transmission control module (TCM) detects an invalid throttle position signal, engine speed signal and/or engine coolant temperature signal for more than 2 seconds.

Action Taken When the DTC Sets
• The TCM will store the DTC when a failure is detected on the first ignition cycle.
• The TCM will illuminate the HOLD lamp.
• The TCM can no longer determine the validity of any information it may or may not receive from the engine control module (ECM). Therefore the TCM substitutes default values for engine speed, throttle position, and other engine data signals.
• Transmission operation will be reduced, affecting shift points, torque converter clutch operation, and other driveability concerns.

Diagnostic Aids
• An intermittent malfunction may be caused by a fault in the electrical circuit. Inspect the wiring harness and the components for an intermittent condition. Refer to Intermittent Conditions in Engine Controls 1.6L.
• Repair any electrical circuit faults that were found. Refer to Wiring Repairs in Wiring Systems.
• Faulty ECM and/or TCM

Install a scan tool.
Turn ON the ignition, with the engine OFF.
Save the DTC and Freeze Frame information into the scan tool memory.
Perform the scan tool Clear DTC Information function for the transmission control module (TCM) and the engine control module (ECM).
Operate the vehicle for 1 minute or until the MIL illuminates.
Check the TCM for DTCs.
Is the Malfunction Indicator Lamp (MIL) On?
--
YES - Go to Step 2
NO - Repair the wiring connectors for intermittent failure

Select request DTC status from the Diagnostic Trouble Codes Information menu
Request DTC by status
Is DTC U0401 displayed?
--
YES - Go to Step 3
NO - Repair the wiring connectors for intermittent failure
3
Turn OFF the ignition.
Disconnect connector A from the TCM.
Turn the ignition ON, with the engine OFF.
Measure the resistance between terminal A17 of the TCM wiring connector and terminal K14 of the ECM wiring connector.
Measure the resistance between terminal A7 of the TCM wiring connector and terminal K15 of the ECM wiring connector.
Was the resistance the specified value for both circuits?
0 ohms
YES - Go to Step 5
NO - Go to Step 4

Mar 19, 2016 | 2005 Chevrolet Aveo

1 Answer

Shift light flashing changed transmission \coil ecm\pcm transmission module diagnostics cyl missfire invalid data u0401


First is year make and model. A U code is data communication codes. Sorry to say, you could have done all this and it could have just been a bad wire.

Mar 19, 2016 | Cars & Trucks

1 Answer

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You can go to Advance Auto, Auto Zone, or other auto parts stores and they will hook up their OBD diagnostic tool to your car and it will read the codes that are causing you your problem. Then they can tell you what the code means, or at least a general idea of where the problem is. For instance, I had a check engine light on, I took it to Advance Auto, they identified the code and told me it was related to the ignition or a spark problem. He told me in his experience to check the spark plugs and spark plug wires first. It was a cracked spark plug boot that gave me an ignition problem whenever it rained or was damp/humid out. You can also google the actual code once you know it, the auto parts stores will give you a printout after they run the OBD scan tool on your car.

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