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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / December 2005DTC Stored vs. Pending?
Hi, I'm an automotive noob, and I'm trying to figure out of my mechanic is telling me a load of crap or there is something really wrong with my car. First, they told me my transmission has some problems and the TCM (Transmission Control Module) is bad, and I have a TCC Circuit Malfuction. I'm driving a Dodge Grand Caravan Sport, 2001 if it matters. They are claiming the TCM is going to cost me $800 dollars to replace, I'm a bit sceptical about this. Anyway, I took my car to Advance Auto to get an unbiased opinion on my vehicle. They plugged in a unit into my dashboard and it came back with this. ******************* DTC Stored P0700 - Transmission Control System Malfunction P0740 - Torque Converter Clutch Circuit Malfuction DTC Pending P0700 - Transmission Control System Malfunction ******************* My main question here is what is the difference between "Stored" and "Pending" when it comes to DTC from an OBDII monitor. Can someone "read" these codes for me, would you believe there to be one or two things wrong with my car? (My uneducated hunch is that the pending (P0700) code is waiting for (P0740) to be fixed, then they will both be removed. Is this right? Thanks, --Michael You need a full scan by a qualified trans tech using a bi directional trans capable scanner that can command and confirm trans controls thru the tcm. Is the trans doing any thing wrong? > Hi, > [quoted text clipped - 33 lines] > Thanks, > --Michael No, the van runs great, no problems shifting whatsoever, which is why I'm very hesitant to drop $800 bucks to fix something that's not affecting me get from one place to another. > No, the van runs great, no problems shifting whatsoever, which is why > I'm very hesitant to drop $800 bucks to fix something that's not > affecting me get from one place to another. So, why did you bring it in in the first place? Did you get a "check engine"/etc light?  Signatureremove MYSHOES to email > > No, the van runs great, no problems shifting whatsoever, which is why > > I'm very hesitant to drop $800 bucks to fix something that's not [quoted text clipped - 5 lines] > -- > remove MYSHOES to email Yes mst, check engine light came on, if it hadn't, I wouldn't have known anything was wrong, car drove fine, even to the shop. > > No, the van runs great, no problems shifting whatsoever, which is why > > I'm very hesitant to drop $800 bucks to fix something that's not [quoted text clipped - 5 lines] > -- > remove MYSHOES to email Yes mst, check engine light came on, if it hadn't, I wouldn't have known anything was wrong, car drove fine, even to the shop. > > No, the van runs great, no problems shifting whatsoever, which is why > > I'm very hesitant to drop $800 bucks to fix something that's not [quoted text clipped - 5 lines] > -- > remove MYSHOES to email Yes mst, check engine light came on, if it hadn't, I wouldn't have known anything was wrong, car drove fine, even to the shop. > > No, the van runs great, no problems shifting whatsoever, which is why > > I'm very hesitant to drop $800 bucks to fix something that's not [quoted text clipped - 5 lines] > -- > remove MYSHOES to email Yes mst, check engine light came on, if it hadn't, I wouldn't have known anything was wrong, car drove fine, even to the shop. In article <1133976928.287213.144690@o13g2000cwo.googlegroups.com>, > Hi, > [quoted text clipped - 25 lines] > My main question here is what is the difference between "Stored" and > "Pending" when it comes to DTC from an OBDII monitor. A monitored system usually has to fail more than one monitor event in a drive cycle before a code is stored, a pending code is a failed monitor just like a stored code but it hasn't happened enough times to become a stored code. > Can someone "read" these codes for me, would you believe there to be > one or two things wrong with my car? (My uneducated hunch is that the > pending (P0700) code is waiting for (P0740) to be fixed, then they will > both be removed. Is this right? No, not right. The P0700 is a fault in the TCM, think of it as the TCMs version of the blue screen of death. It can be as simple as a missing battery feed, 12 volt switched feed or missing ground, or it can be a major failure of the TCM. The trouble shooting sequence basically tells to verify power and grounds and if good, replace the TCM. There is nothing in the code P0740 trouble shooting procedure that mentions that a P0700 should be ignored until the P0740 is fixed. The P0740 basically means that the TCC solenoid has gone maximum duty cycle and the TCM hasn't seen the resultant reduction of speed at the transaxle output speed sensor when compared to the input speed sensor. If anything, the P0740 may be fixed once the P0700 is fixed. > The P0700 is a fault in the TCM, think of it as the TCMs version > of the blue screen of death. So what you're saying is that the software is built by m$. If so, I'd be selling it RIGHT NOW. :) Signatureremove MYSHOES to email > > The P0700 is a fault in the TCM, think of it as the TCMs version > > of the blue screen of death. > > So what you're saying is that the software is built by m$. Nope, I didn't say that. Though, I'd heard some rumblings about BMW... ;-) > If so, I'd be selling it RIGHT NOW. :) I'll give ya 20 bucks for it. Thanks aarcuda, You've provided a lot of clarification, and basically confirmed what the shop I took my car into said. So, I'm a running a major risk by not getting it fixed?, even though it doesn't seem to be making any noticible difference in my driving? I am getting the P0740 issue fixed (under warranty) |
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