85 Ranger 2.3L codes 21,23,24 sensors “out of range” and 41 states lean condition which I have been dealing with(replaced TPS). What exactly does “out of range” mean?

10

Asked by Nov 29, 2013 at 11:27 AM about the 1985 Ford Ranger XLT Standard Cab SB

Question type: Maintenance & Repair

85 Ranger 2.3L codes 21,23,24 sensors “out of range” and 41 states lean condition which I have been dealing with(replaced TPS). What exactly does “out of range” mean?

1 Answer

22,475

Parameters are set for the computer to recognize malfunctions. Generally, the TPS has an operating range of .5V to 4.5v. Any reading above or below those parameters will cause the PCM to ignore the sensor, default to a "fail- safe" mode (FMEM - Failure Mode Effects Management). A Lean code can mean that there isn't enough fuel to support Stoichiometric air/fuel ratios or perhaps the O2 sensor is open or shorted to ground or power. The acceptable voltage parameters for an Oxygen sensor are from .1V to 1.0v with the engine at operating temperature. The best way to diagnose this concern is with a Break-Out box or by pinning-out voltages at the sensors/actuators and at the PCM connector as well as testing the continuity of the harness from the PCM to each Actuator/Sensor. Or you could throw parts at it until you get lucky.

Your Answer

Add photo

Related Questions

Search Ford Ranger Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford Ranger Experts

#1 FordNut
FordNut
Reputation 1,400
#2 tennisshoes
tennisshoes
Reputation 1,160
#3 Tracy Hooks
Tracy Hooks
Reputation 730
View All

Related Models For Sale

Used Ford F-150
3,031 Great Deals out of 207,234 listings starting at $1,990
Used Chevrolet S-10
13 Great Deals out of 1,614 listings starting at $1,800
Used Ford Mustang
549 Great Deals out of 42,544 listings starting at $1,699

Used Cars For Sale

2011 Ford Ranger For Sale
60 Great Deals out of 1,179 listings starting at $4,499
2010 Ford Ranger For Sale
24 Great Deals out of 502 listings starting at $2,999
2009 Ford Ranger For Sale
17 Great Deals out of 402 listings starting at $3,995
2008 Ford Ranger For Sale
22 Great Deals out of 523 listings starting at $2,999
2007 Ford Ranger For Sale
11 Great Deals out of 366 listings starting at $1,995