Question about 1994 Geo Prizm

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Trouble code 12 has the description of "Engine RPM Signal" that I found on the net. Now, I need guidance on possible solutions. Where do I begin to fix that problem?

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The distributor needed to be replaced.

Posted on Jul 17, 2008

  • Dan Jord Sep 25, 2011

    Had same problem, replaced distributor and now car cranks, turns over and runs for a second or two may 5 depending. Now get code 14, any ideas?

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Need to know what code 2110 ford fusion 2006 se


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Read more: http://helpforcars.net/obd_codes/p2110_2006_ford_fusion.html#ixzz3mV0SayWu

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I need the list of codes for a 1994 corolla


1.6 GLi COROLLA

DTC NUMBER TROUBLE AREA 12 clip_image001.gifRPM signal 13 clip_image002.gifclip_image002.gifRPM signal 14 IGN signal 16 ECT Signal 21 Oxygen sensor signal 22 Water temperature signal 24 Intake air temperature sensor 25 Air / Fuel ratio lean 31 Vacuum sensor signal 41 Throttle sensor 42 Vehicle speed sensor 43 Starter signal 52 Knock sensor 51 Switch COND

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Have a 94 toyota camry , check engine light comes on when stop at light or car sits at idle. got codes 12 , 22, am very confused !!


Code 12. RPM signal.
Problem area: Loose connection, broken rpm signal wire from distributor to ecm to rpm meter, rpm meter, distributor assembly or ecm defective.
Code 22. Water temperature signal.
Problem area: Loose connection at water temperature sensor connector, broken wire between the sensor and the ecm, defective sensor or ecm.

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1 Answer

Nissan altima p0725


HERE IS THE ANSWER.
P0725 - Nissan Type Powertrain - Transmission - ISO/SAE Controlled Description Engine speed (RPM) - incorrect voltage signal ECM to TCM
Cause Wiring, RPM sensor, TCM, ECM
P0720 - Nissan Type Powertrain - Transmission - ISO/SAE Controlled Description AT - vehicle speed sensor (VSS)
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Trouble code 12 for 1993 chevy silverado


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Got trouble codes for 1991 buick century po12 po34 po 45 po 48 wat does that mean and give me the remedial action for that


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Toyota 4runner 1994 engine codes 12,52,71 what are these


Code 12 Engine revolution signal missing
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I recieved Code 12 from diagnosis


For 83-86 Camry, 87 corolla, 84-87 pickups and 4-runner: Code 12 = knock sensor or circuit (distributor or circuit on Cressida, Supra, and Celica 3S-GE)

87-90 Camry, all other models 88-90: Code 12 = Rpm signal/no NE or G signal to ECU within several seconds after engine is cranked.

All models from 1991 on: Code 12 = Rpm signal No "Ne" signal to the ECM within several seconds after the engine is cranked. No "G" signal to the ECM two times in Succession when engine speed is between 500 rpm and 4000 rpm.

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1 Answer

1994 Toyota 4Runner V6 2.0 VZE Engine, Automatic, 4wd DTC trouble code 12 how do I troubleshoot this code?


that code is for rpm signal and possible causes are the distributor wire harness from dis. to ecu (engine computer) or ecm itself! do you have rpm tach working on the dash? if so it might have seen the fault for a few seconds and set the code if you don't have rmp tach then you need to diagnois the cuase by testing the signal out of the dis. then down the line! if you have any more question please ask. good luck

Sep 11, 2009 | 1994 Toyota 4Runner

1 Answer

Correction on problem description from rluiggi


code 12 - no distributor reference signal, check the camshaft position sensor, then the crankshaft position sensor

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