You are here:

Dodge Repair/dodge grand caravan: code 24


i have a dodge grand caravan that runs really rough but drives and wont idle it shows po codes 12,24,55 and i think it has been overheated once i was wondering if u could help me in any way with this problem to fix it.

Hi Bob,
The 12 code just means that sometime recently (within 50-100 key starts) the battery was disconnected, and the 55 code means end of code readout and corroborates that the readout occurred. The 24 code says that the throttle position sensor output signal is outside of the range of possible values (either open or shorted). So take a look at the sensor wiring which starts as a plug on the side of the throttle body (4 wires) at the exact position of the axis of the throttle plate and that harness goes to the powertrain control module. See whether any of the wires along the way may have melted or damaged insulation. If you would like to test the wires for continuity or shorting to ground or one another let me know the year model and the engine (L) you have. If that all checks out then the sensor can be tested for possible replacement.
Please read the PS below.

Dodge Repair

All Answers

Answers by Expert:

Ask Experts


Roland Finston


Get a Free Fast answer to your repair question about a Chrysler/Dodge/Plymouth car, minivan, SUV, or truck. Problems with electronically controlled engines and transmissions as well as body wiring problems are my specialty. This free troubleshoot advice forum helps you diagnose faults, minimize repair costs or do-it-yourself.

I answer questions seven days a week and respond to you in about 30 minutes. "Maxed Out" means I am answering another question or briefly unavailable so try again later.

I have do-it-yourself experience (50+ years) and a library of 100 1982-2012 Chrysler factory shop manuals and 20 multi-manual Chrysler Corp. CD's.

I was voted "Top expert" from 2010-2015 here at AllExperts, and have answered 20,000+ questions.


Five decades as a 'do-it-yourselfer' on domestic and imported cars

Yahoo Autos Group called The Chrysler Lebaron Club (co-moderator)

Degrees in Physics/bruised knuckles.

Awards and Honors
"Top expert" of 2010, 2011, 2012, 2013, 2014, and 2015 here at Allexperts. Quickest "average response time" at Allexperts (currently no. 1).

©2017 All rights reserved.