fault codes Archives - Transmission Digest
Solving a 4L60E acceleration shudder puzzle

Today’s story concerns a 2007 Chevrolet pickup with a 5.3L V8 engine paired with a 4L60E transmission. The customer reported a slight shudder during acceleration, one that was particularly noticeable when merging onto the highway. Grabbing the work order and my trusty Snap-on scanner, I headed out to diagnose the issue. “This shouldn’t be too

Watch: CVT electric and communication codes

Find out if your transmission module is not sharing information properly. Different codes will indicate different issues within the transmission. Watch the latest video from Transtar for more information.

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Watch: Transmission trouble codes

If you are seeing trouble codes with your transmission, it is important to understand the differences and what each separate code indicates. Watch the video above from Transtar for the details.

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Dealing with the increasingly common pin-fit problem

I want to talk a little bit about a common diagnostic misstep or overlooked problem that is prevalent in the automotive repair industry and seems to be on the rise. Pin-fit or tension can deal us a fit sometimes (pun intended), especially if we do not have the proper tools to determine if this mode

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Diagnostic tips for the Ford 6F35

We have all experienced repairs that seem to “go down the rabbit hole,” as we call it. Our subject today is one such issue: a Ford 6F35 transmission with codes P073D or P177F after repair and a complaint of trying to go into Reverse while in Neutral, or a bind in Forward when cold. This

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A 10L80 with a buck and bang

A 2018 Cadillac Escalade ESV AWD 6.2L using a 10L80 transmission came in to Stroli Motors barely moving forward, making a banging noise in the center of the gearbox. Reverse was good. Keith from Stroli pulled two codes from the PCM: P0300 for Random Multiple Cylinder Misfire Detected; and P175E for Shift Limiting Active. P175E

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Diagnosing AS68RC intermittent pressure switch/linear solenoid performance codes

Intermittent pressure switch codes on vehicles with the Aisin Seiki AS68RC transmission have been very difficult to nail down to one specific cause. The two most common pressure switch codes for this transmission are P0746 clutch pressure control solenoid A or linear solenoid A performance or “Stuck Off,” which also includes pressure switch 1 mechanical

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How do you know if a car is lying to you?

Sometimes a vehicle comes into the shop with a code in memory and a concern, and it is quick and easy to follow the code and find the source of the problem. But how do you know if a car is lying to you, trying to throw you off the trail with some false information?

From one problem to the next: When a simple solution becomes complicated

A 2007 Chevrolet Express 3500 comes to our shop with a concern of no reverse and very little forward movement. A quick check of codes reveals the following: P0171 Fuel Trim System Lean B1 Po174 Fuel Trim System Lean B2 P0218 Transmission Fluid Overtemp P0300 Engine Misfire Detected P0455 Evap Leak P0753 1-2 Shift Solenoid

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FCA 62TE slipping in second and fifth

The complaint Immediately after overhaul, a 2013 Chrysler Town and Country with a 3.6L engine and a 62TE transmission faults to limp mode. The scan tool reveals trouble codes P0732 “Second Gear Ratio Error,” P0735 “Fifth Gear Ratio Error,” P0792 “Compounder Speed Error,” and P1790 “Fault After Shift” are set. During the overhaul procedure, the

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What to do when the right fault codes aren’t set

In this situation, we replaced the transmission in a 2004 Chevrolet Trailblazer and when the owner returned for a 15-day recheck, he mentioned that he had felt a hard shift at times. During my checks I found P0748 (Pressure Control Solenoid A Electrical) stored in the PCM history along with P0455 (Evaporative Emission Control System

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Diagnosing Solenoid Performance Faults in A761, AB60 & A960 6-Speed Units

The Toyota/Lexus A761, AB60 and A960 6-speed transmissions have been showing up in shops more frequently over the last couple of years. Warranties are expiring and people seem to be hanging on to their vehicles longer these days. Even so, there are a number of different issues with these transmissions, including torque-converter clutch failure that is especially chronic with AB60 Tundra applications. Common to all these units is a problem that sticks out a bit more than the others, though: on-off solenoid mechanical fault codes. You’ll see these as P0751 S1 solenoid performance, P0756 S2 solenoid performance, P0761 S3 solenoid performance and P0766 S4 solenoid performance codes.