Transmission will not shift pass second gear

Can you provide a list of the codes you pulled from the vehicle?

Can you provide the specific code number? This will help tremendously in helping to diagnose the root cause of the issue.

Thanks.

Unfortunately there's three different possible codes that can set for shift solenoid C, most of which are caused by circuit related issues. That being said, we'll need to test the wiring for the shift solenoid. These tests will require the use of a DVOM(Digital Multi-meter). Take a look at the link below if you are not familiar with the use of this tool.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Let's start with the following tests. Please reference the attached diagrams for wiring/connector information. The highlighted circuit is the one we're focusing on.

1. Disconnect the transmission connector.
2. Measure the resistance between terminal G and Ground(transmission case). You should see a resistance value of 1.0 - 4.2 ohms. If the reading is less than 1.0(close to zero), inspect the transmission harness for a rub through/chafed wire. If the reading is greater than 4.2(or meter indicates "OL"), inspect the harness for a broken wire or heavy corrosion.
3. If above reading falls between 1.0 -4.2, this indicates there is likely an issue with the wiring between the transmission connector and the PCM(Power-train Control Module). Proceed to next step.
4. Disconnect the PCM connector. Measure the resistance between terminal G of the transmission connector(vehicle harness side) and terminal 1F on the PCM connector(vehicle harness side). Value should be less than 1.0 ohm. If it's greater than this value(or meter indicates "OL"), there is an open circuit between these two points. Inspect the vehicle harness for a broken wire.
5. If the value is less than 1.0 ohm, there is still a chance of a short to ground. At this point, measure the resistance between terminal 1F on the PCM connector and ground. The meter should indicate "OL". If you see any value at all, this means the circuit is rubbed through somewhere and shorted to ground. In this case, you'll need to inspect the harness and find the point of rub through.

Let us know what you find!