P1765 on Dodge
Transmission 12-Volt Supply Relay Control Circuit
P1765 on Dodge vehicles indicates transmission 12-volt supply relay control circuit. Au7o has documented this code across 1 Dodge model — most commonly on Dakota. This manufacturer-specific code (commonly Ford) indicates a problem in the control circuit for the transmission's 12-volt supply relay, which powers the transmission solenoids and control components. The computer detected that this supply circuit is not energizing or responding correctly. Because the transmission solenoids depend on this feed, you may experience harsh shifts, no shifts, or the transmission dropping into a limp/failsafe mode. It is generally an electrical/relay/wiring fault rather than internal mechanical transmission failure. Typical repair costs on Dodge range from $200 to $800, depending on the specific model and root cause.
Common Causes of P1765
- •Faulty transmission power relay
- •Open or shorted wiring in the relay control circuit
- •Corroded or loose connector or ground
- •Blown fuse on the transmission supply circuit
- •Faulty TCM/PCM relay driver
- •Internal solenoid short loading the supply
P1765 on Dodge by Model
Dodge Dakota(1 issue)
- Transmission Overdrive Solenoid Failure (42RE/45RFE)1997-2011
The 42RE (4-speed) and 45RFE/545RFE (5-speed) automatic transmissions in the Dakota suffer from overdrive solenoid failures. The overdrive solenoid sticks or fails electrically, preventing the transmission from engaging overdrive or causing it to drop out of overdrive unexpectedly. This increases highway fuel consumption and engine RPM. The issue is exacerbated by old, contaminated transmission fluid.
Looking for P1765 on a different make?
View P1765 across all makes →Frequently Asked Questions
What does P1765 mean on Dodge?▼
P1765 stands for "Transmission 12-Volt Supply Relay Control Circuit." This manufacturer-specific code (commonly Ford) indicates a problem in the control circuit for the transmission's 12-volt supply relay, which powers the transmission solenoids and control components. The computer detected that this supply circuit is not energizing or responding correctly. Because the transmission solenoids depend on this feed, you may experience harsh shifts, no shifts, or the transmission dropping into a limp/failsafe mode. It is generally an electrical/relay/wiring fault rather than internal mechanical transmission failure. On Dodge specifically, this code is documented across 1 model.
What causes P1765 on Dodge vehicles?▼
Common causes on Dodge: Faulty transmission power relay, Open or shorted wiring in the relay control circuit, Corroded or loose connector or ground, Blown fuse on the transmission supply circuit, Faulty TCM/PCM relay driver. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P1765 on a Dodge?▼
Repair costs on Dodge range from $200 to $800, depending on the specific model and root cause.
Which Dodge models have P1765 documented?▼
Au7o has documented P1765 on 1 Dodge model: Dakota.