2.3L 4CY

2002 Ford Ranger

I have a 2002 Ford Ranger, stick shift with about 115,300 miles. My check engine light is on giving a code of a P1432. I have went to several atuo part stores and the code looked out after each try.

One place says its the Secondary Intake Valve Open. Another place gave a list of what the code could mean:
Thermostat Heater Control Circuit Failure
Fuel Pressure Sensor Circuit Low
Fuel Level Sensor 2 Circuit low input

The oil have been changed on a regular, new air fliter, and even did a fuel injector cleanning. I have sprayed clean most of my sensors. The last few places told me to try a new pcv valve. Is there a second oxygen sensor on the truck near the catalytic converter?

But now can anybody lead me in the right direction for what to look for and check now.
July 17, 2007.

2002 Ford Ranger 2.3L 4cylinder p1432 code

I had this code too. The dealer charged me $130.00 to tell me it's the electronic thermostat and wanted $500.00 more to fix it. I located one on Ebay and put it on myself for about $110.00. After I got the new one installed the auto parts dude reset the check engine light and I am good to go. I inspected the old unit and sure enough the little tiny connectors on the wire plug looked fried and black. I had to remove a keeper clip to pull that wire connector out for inspection. So based on my experience if you're getting P 1432 code and a fried connector it may be time to replace the electrionic thermostat. Also of note is that I purchased a 2001 2.3 ranger thermostat. The folks that sold it said it's the same part so I trusted them and It's working well so far.

After closer inspection it looks like I broke the wires off a thermistor coming out of the thermo housing. It appears that the thermistor is imbedded in epoxy and it's fried to a crisp.

Jul 23, 2008.