What this code means
P0746 concerns the solenoid valve that controls pressure at the CVT drive pulley. The valve may be stuck OFF.
P0746 concerns the CVT drive pulley pressure control solenoid valve and a possible stuck-OFF condition. The TCM's monitored description includes the pulley ratio while stopped with the forward clutch engaged, the estimated input-torque condition when starting, and the absence of belt slippage during driving.
Those conditions describe the particular fault being reported. Keep them together when reading the code. The procedure then gives a replacement action followed by two driving sequences, each with its own starting condition.
What the vehicle may do
The transmission control module, or TCM, monitors a combination of operating conditions. The pulley ratio is in overdrive while the vehicle is stopped with the forward clutch engaged. Estimated input torque when starting is at or above a specified value. Belt slippage does not occur when driving. When these conditions are met, the TCM identifies the fault and stores P0746. These conditions belong together. In particular, the absence of belt slippage is part of this code's monitored condition.
Possible fault areas
The procedure concerns the CVT drive pulley pressure control solenoid valve. Its stated repair action is to replace the pressure control solenoid valve, followed by the driving sequence below.
The named pressure control solenoid valve is the work item for this procedure. The first drive takes place in D until the stated speed is reached, followed by a stop. The next sequence specifically begins from a stop and uses full throttle in D until the stated speed, followed by another stop.
The second sequence therefore adds a starting condition and throttle instruction that are explicit parts of that step. Retain them as written instead of treating the two drives as identical repetitions.
Diagnostic path
Replace the pressure control solenoid valve
Replace the pressure control solenoid valve for the CVT drive pulley. Keep the component matched to P0746: this procedure concerns the drive pulley valve and its stuck-OFF condition.
Make the first drive and stop
Start the engine. With the transmission in D position/mode, test-drive until the vehicle reaches 37 miles per hour (60 kilometers per hour). Then slow down and stop the vehicle. Complete this stop before moving to the acceleration from a standstill.
This part of the sequence establishes the drive in D and the following stop. The stop is the transition to the next acceleration from a standstill. Keep the speed requirement with this first drive and preserve the separate full-throttle instruction for the following sequence.
Accelerate from the stop
Starting from a stop, accelerate at full throttle in D position/mode until the vehicle reaches 37 miles per hour (60 kilometers per hour). Then slow down and stop the vehicle again. This is a separate operating sequence from the first drive: it specifically starts from a stop and uses full throttle.
The full-throttle action applies to the acceleration that starts from a stop. It remains associated with D position/mode, the stated target speed and the final slowdown and stop. Those details define this operating sequence and should be read together.
Use the HDS data view
The HDS diagnostic tool function for this procedure is AT Data List. Keep this data view associated with the P0746 procedure and the driving conditions above.
Final check
Keep the two driving sequences in order: first drive in D to 37 miles per hour (60 kilometers per hour) and stop; then accelerate from a stop at full throttle in D to the same speed and stop again. P0746 concerns the drive pulley pressure control solenoid valve and the TCM's monitored stuck-OFF conditions. Preserve those conditions when interpreting the code.
The completed procedure should retain the valve identity, its stated replacement and the order of the two drives. The first drive and stop lead into the full-throttle acceleration from a stop. Together with the monitored fault conditions, that sequence supplies the context for P0746 in this guide.
