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ian fawley Posted on Oct 03, 2016
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I have a 2003 Cadillac cts getting codes p1795 p1780 p1779 p2176 what can be possible problems to fix them?

The car goes into limp mode reduce power. i can clear the codes and it can be fine for a few days or it will do it a couple times a day help?

  • ian fawley
    ian fawley Oct 03, 2016

    when i got the car i had code p2176 idle relearn not learned i tried two different relearns i found on the internet since i tried them i have these other codes now which i had other codes before i tried the relearn any ideas or what parts i need to fixed the issues would be appreciated.

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Bill Boyd

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  • Cadillac Master 53,816 Answers
  • Posted on Oct 04, 2016
Bill Boyd
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Code p 2176 refers to throttle actuator control(TAC) system--idle position not learned ===causes basic setting not carried out
code p 1795 is CAN bus--throttle body position
code p 1780 is park/neutral position (PNP) switch circuit engine torque signal circuit
code p 1779 is engine torque delivered to TCM signal
go google and type in cadillac fault codes and find a site that has all the codes listed

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Have A 2003 Saturn Vue I have codes p0102,p0221,p0700,p1779,and p2176

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2003 Cadillac CTS How to fix reduced engine power

read the fault codes and fix the problem sensors
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I have a 2003 Cadillac CTS. It continues to go into reduced power mode. How do I correct that.

Are you getting a ENGINE POWER REDUCED message ? Is the check engine light on ?
Reduced Engine Power Mode
Throttle Actuator Control (TAC) System
electronic throttle control .
When the ECM detects a condition with the TAC system the ECM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
?€¢
Limited torque


?€¢
Limited range of throttle movement


?€¢
Engine OFF


Your going to need to take this to a ASE certified repair shop or the dealer , you probably don't have the diagnostic tools to trouble shoot this problem.
https://youtu.be/oPPLAHSSluw

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On my Cadillac 2004 CTS on the dash says, Engine Power Reduced ??

run the fault codes as it may be in limp mode to protect the transmission or engine.
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P1779 p1780 p1795 p0700 p2176

Trouble Code: P0700

Malfunction Indicator Lamp Circuit Malfunction (TCM)

Possible Causes:


MIL control circuit is shorted to ground.Check the TCM for any trouble codes in memory that are responsible for the request to turn on the MIL.TCM has failed.Trouble Code: P1780

Engine Torque Signal Circuit Malfunction

Possible Causes:


.Perform the Diagnostic System Check for the Engine Controls.TCM needs to be replaced.Trouble Code: P1795

Throttle Plate Position Invalid Data Received

Possible Causes:


Perform the Diagnostic System Check for the Engine Controls.TCM may need to be replaced to repair this trouble code.Trouble Code: P2176

Throttle Position Sensor Minimum Position Not Detected

Possible Causes:


TAC motor control circuit (one or more) open or shorted to B+.TAC motor control circuit (one or more) shorted to ground.Throttle valves not at the "rest" position.Throttle valve are binding open, or are binding closed.Throttle valves moving open or closed without spring pressure.TP connector is damaged, open or shorted.Throttle body assembly is damaged or it has failed.PCM has failed.Couldn't find code P1779.

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I have a 203 caddilac cts,and codes #1779 1795 1780 po700, i would like to know what the codes are.

po700 Transmission Control Module Requested Malfunction Indicator Lamp Illumination, p1779Engine Torque Delivered To Transmission Control Module, Signal p1780 Engine Torque Reduction Signal Circuit p1795 Controller Area Network Bus Throttle Body Position
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