WHICH PART DO I NEED TO FIX P1823

2001 Cadillac Deville

Tiny

phatboy76

September, 4, 2012 AT 9:03 PM

Hi,

My 2001 Cadillac Deville failed inspection in Massachusetts and the code was P1823. Which part will I need to fix this problem please? Thanks!

FOUND 1 RELATED QUESTIONS

3 Answers

Tiny

KHLow2008

September, 4, 2012 AT 9:22 PM

This is a fault with the transmission Internal Mode switch and testings have to be carried out to determine if the switch, its wiring or the PCM.

A scan tool would be helpful to perform diagnostics.

Tiny

phatboy76

October, 18, 2012 AT 11:29 PM

Thanks so much for your response! The trouble code I am getting is"P1823 Internal Mode Switch Circuit P Low". Do you know what kind of scan tool will I need and where could I get one? Will this help me to figure out definitively if it's just the wiring, the switch, or the PCM? Could this be the PNP? Thanks again!

Tiny

KHLow2008

October, 19, 2012 AT 5:07 PM

A scan tool capable of performaing actuation test is required and there are many different suppliers which you would have no problem locating if you google.

For wirings you might need more than the scan tool, a DVOM is more practical.

Problem can be any of the following only.
PCM
Internal Mode Switch (located within transmission)
Transaxle wire harness

Please login or register to post a reply.

Fuel Pump Replacement Ford Mustang
Catalytic Converter Replacement Volkswagen
Crankshaft Position Sensor Replace Chevrolet
Crank Angle Sensor Replacement Mercedes Benz