Code 09: low freon detected - ZR-1 Net Registry Forums

frank12 · 03-20-2006

I disconnect the battery, making reset to the ECM
and the A/C works during about 15' again,
then it indicates with green light blinking again
and Code 09: low freon detected is indicated.

We have controlled and the levels are correct,
being totally full the circuit.

Which the problem could be?

Thank you

Frank Teixido Barcelona/Spain
Member 451
ZR1 91 Yelow #1172

Aurora40 · 03-20-2006

There is a low-side pressure switch that checks the freon pressure before allowing the compressor to cycle on. Is it possible this has gone bad?

It is on the passenger side near the firewall and radiator fill reservior on my 1990.

Just a thought, I am no A/C expert by a long shot.

frank12 · 03-21-2006

I have made a bridge, and yes it is really the pressure switch.
I will have to change it.

Thank you

03-20-2006	#2
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,704	Re: Code 09: low freon detected There is a low-side pressure switch that checks the freon pressure before allowing the compressor to cycle on. Is it possible this has gone bad? It is on the passenger side near the firewall and radiator fill reservior on my 1990. Just a thought, I am no A/C expert by a long shot.

03-21-2006	#3
frank12 Join Date: Sep 2005 Location: Barcelona/Spain Posts: 39	Re: Code 09: low freon detected I have made a bridge, and yes it is really the pressure switch. I will have to change it. Thank you __________________ AM.C.C.C.

03-20-2006	#1
frank12 Join Date: Sep 2005 Location: Barcelona/Spain Posts: 39	Code 09: low freon detected I disconnect the battery, making reset to the ECM and the A/C works during about 15' again, then it indicates with green light blinking again and Code 09: low freon detected is indicated. We have controlled and the levels are correct, being totally full the circuit. Which the problem could be? Thank you Frank Teixido Barcelona/Spain Member 451 ZR1 91 Yelow #1172 __________________ AM.C.C.C.