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

27,915

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:

Ford Ranger Experts

  • #1
    tennisshoes
    Reputation
    1,620
  • #2
    F_O_R
    Reputation
    1,110
  • #3
    Bob Beaman
    Reputation
    1,040
View All

Related Models For Sale

Used Ford F-150
2,239 Great Deals out of 210,391 listings starting at $1,300
Used Chevrolet S-10
5 Great Deals out of 884 listings starting at $1,500
Used Ford Mustang
273 Great Deals out of 37,795 listings starting at $1,350

Used Cars For Sale

2011 Ford Ranger For Sale
30 Great Deals out of 695 listings starting at $3,488
2010 Ford Ranger For Sale
13 Great Deals out of 355 listings starting at $4,450
2009 Ford Ranger For Sale
4 Great Deals out of 231 listings starting at $3,995
2008 Ford Ranger For Sale
20 Great Deals out of 339 listings starting at $2,095

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.