What Does P0782 Mean?
The TCM has detected an electrical fault in the Pressure Control Solenoid B circuit. This code may also indicate a 2-3 shift malfunction on certain platforms. The electrical circuit controlling PCS B has abnormal resistance, an open circuit, or a short that prevents the TCM from properly commanding the solenoid. This results in the inability to properly regulate transmission line pressure for specific shift events.
Common Causes
35%
Failed PCS B solenoid with internal coil open or short circuit
25%
Damaged, corroded, or broken wiring between TCM and transmission
20%
Corroded or damaged transmission connector
12%
TCM solenoid driver circuit failure
8%
Poor ground connection at TCM or transmission housing
Diagnostic Steps
1
Measure PCS B solenoid resistance at the transmission connector and compare to manufacturer specification.
2
Inspect the transmission external connector for water intrusion, corrosion, damaged pins, or compromised seals.
3
Test for proper voltage and ground at the solenoid when the TCM commands it on using a multimeter.
4
Check wiring continuity between the TCM and transmission connector, looking for open circuits or high resistance.
5
Wiggle test the harness while monitoring the PCS B circuit to identify any intermittent connection issues.
6
If wiring and connectors are good, remove and bench-test the solenoid to confirm internal coil failure.
Estimated Repair Cost
$150 - $900
Parts + labor, varies by vehicle and location
The TCM has detected an electrical fault in the Pressure Control Solenoid B circuit. This code may also indicate a 2-3 shift malfunction on certain platforms. The electrical circuit controlling PCS B has abnormal resistance, an open circuit, or a short that prevents the TCM from properly commanding ...
The most common cause of P0782 (Pressure Control Solenoid B Electrical) is: Failed PCS B solenoid with internal coil open or short circuit
Typical repair costs for P0782 range from $150 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The transmission will likely enter limp mode, restricting shift capability. The vehicle can be driven at low speeds but normal shifting is impaired. Repair the electrical fault promptly to restore proper transmission operation.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0782 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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