95 ram 1500 troubles

From : chrissy

Q: i have a 2004 dodge ram 1500 and it shows a code of p0533. i know this is related to my a/c and i can tell you that my a/c does not work as good at i think it should. can anyone let me know how to fix the problem .

Replies:

From : tom lawrence

i have a 2004 dodge ram 1500 and it shows a code of p0533. i know this is related to my a/c and i can tell you that my a/c does not work as good at i think it should. can anyone let me know how to fix the problem it could be low on refrigerant or it could be a bad sensor. back-probe the pressure sensor connector on the discharge line near the compressor - its a 4-way connector on the dark blue wire with the engine running and the a/c turned to max. if you get no volts or 5 volts the sensor is bad. 4.5 volts indicates a properly-operating system while less than 4.5 indicates low pressure and anything above indicates high pressure. if low or high pressure is suspected verify with a set of refrigerant gauges. if warranted the sensor can just unscrew. you wont lose refrigerant - theres a valve built in to the line to prevent that. make sure to use a new o-ring and lube it with the proper oil if you do change the sensor. .