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Computer hangs up. Has C1 fault code consistently

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Carrier Comfort Zone II Thermostat is blank and the 3 companion thermostats are all showing Error Code C1. What does that mean?

Hi Anonymous,
For all wall mounted and Artcool split system codes

Error code = C1 or CH1
Flashing Light = 1
Fault = Indoor temperature sensor open or closedcircuit.
Display = Indoor.
Indoor Operation = ON

Error code = C2 or CH2
Flashing Light = 2
Fault = Outdoor temperature sensor open orclosed circuit.
Display = Indoor Outdoor.
Indoor Operation = ON

Feb 14, 2015 | Carrier Heating & Cooling

1 Answer

What is a code c1 on a samsung mini split?

Error code = C1 or CH1
Fault = Indoor temperature sensor open or closed circuit.

Jul 26, 2014 | Samsung AQV12VBCN Vivace Mirror Finish...

4 Answers

I have a problem with my Nokia C1

Hi, You can get the restriction code for a Nokia C1-01 from at affordable cost.
1 - Switch on your Nokia C1-01 without any sim card.
2 - Don't bother as to what is displayed on your Nokia C1-01.
3 - Compose #pw+CODE+1#.
4 - The Nokia C1-01 would then display the message "SIM Restriction Off" and will be unlocked!

Note :For Nokia C1-01 mobile phones locked to the network Fido or Rogers in Canada follow these instructions :
1 - Switch on your Nokia C1-01 without any sim card.
2 - Don't bother as to what is displayed on your Nokia C1-01.
3 - Compose #pw+CODE+7#.
4 - The Nokia C1-01 would then display the message "SIM Restriction Off" and will be unlocked!

Oct 05, 2012 | Nokia C101 Cell Phone

15 Answers

Restriction code for Nokia C1-01

i have a nokia c1-01 phone but i don't know restriction code.imei 359040/04/152758/4 code 059f8m5. please give restriction code.

May 12, 2012 | Nokia C101 Cell Phone

1 Answer

Lg muilty system midwall unit error code c1

C1-Indoor unit return air sensor fault, Open or Short. Disconnect sensor from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C if not replace

Nov 02, 2010 | LG Art Cool LA181CNW Split System Air...

1 Answer

1996 jeep Grand Cherokee has a scan code P0351.It says

Wiggle the connectors on the PCM during those four or five minutes...
I'm going to try the hose clamp fix myself. I have been struggling with stalling for about a month now. As a matter of fact, my PCM looks just like the one with the hose clamp. Connector C1 (black) missing the locking tab. I have tried the screw repair and zip ties. Zip ties worked for about a week and then I had a hiccup followed two days later by a full blown stall. Now it's stalling about 4 to 6 times in a one way trip to work (11 miles).
I was able to procure a clamp tonight and got it installed. When I go home we'll see. I was throwing a P0351 code with a code 43. This is an aggravating fault to be sure. I am an aircraft electrician by trade so and thanks to the volumes of people who have had this problem I have been able to do some really good fault isolation.
It exists either in the C1 connector for me or the PCM. Initially I changed the TPS and then found found C1 ready to fall off the PCM (Thus the zip ties).
Later I found that even though zip tied wiggling the harness could duplicate the fault. So another zip tie around the harness to pull tension on the connector. The fault returned. I also took a rubber mallet to the computer while the engine is running and duplicated the fault as well.
At this point I'll try the hose clamp and see how that works out. Either I don't have a good connection on C1 or the male pin 7 in the computer is a problem. Since I have an obvious defect in the locking tab on the C1 connector I'm swaying towards that. I want to talk a little system knowledge here courtesy of a guy who posted on CNet.
1. P0351 is a coil code. However:
a. The coil receives a signal from the PCM connector C1 Pin 7 to "fire".
b. There are only two wires at the coil, signal wire from the PCM pin 7 and a ground wire.
c. In order for the PCM to throw code P0351 the PCM had to fail to send the proper fire signal. Of course this assumes that you have a known good coil, clean ground and no breaks in your wiring.

2. A multimeter checks continuity not integrity. The average 18 gauge wire has 22 individual copper conductors(wires) inside the insulation. You can have 21 broken strands and still read full continuity through that single strand of wire. But that single strand of wire will not be able to handle the signal being sent to the coil (load). A load light will always check integrity AND continuity. A weak light means not enough current going through the wire and a strong light means good wire integrity.
3. So with this said, In order for P0351 to set, the computer has to give an erroneous signal to fire. Pin 7 is an OUTPUT. Now is this caused by a bad computer? Possible. A bad connection? More likely.

Let's face it computers will fail, but in my 22 years of electrical experience bad/loose/dirty connection points are the weakest link. A cold solder joint on the PC board in the computer? Yes, however this will generally show up shortly after the vehicle rolls off the assmbly line. Not 13 years later!
As for the "screw" fix. I read a post from an engineer who scraped all the resin out of the PCM to see what was on the board. The long screws go to a NYLON nut on the board. But does not come near the current path of the PC board.

Apr 12, 2010 | 1996 Jeep Grand Cherokee

1 Answer

C1 keeps popping up on display during cycle and wont finish. what do i do?

C1 isn't the code, it is a warning that a problem has been detected with the ABS system.

Apr 26, 2009 | Washing Machines

1 Answer

C1 Fault

code CL.(C1) This may signify problems with the drive motor, thermal protector, or motor controller. Over-loading the unit may cause this problem. Calypo washers do have a history of break downs within the drive system.

Dec 08, 2007 | Whirlpool Calypso GVW9959K Top Load Washer

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