P1756Manufacturer-specific code

P1756 Code: Governor Pressure Not Equal to Target at 15 to 20 PSI (Chrysler)

On Chrysler, Dodge, Jeep and Ram vehicles, the P1756 code means the governor pressure does not match the target at 15 to 20 psi. The check engine light comes on and shifting may become erratic. Other brands may define this number differently.

Severity
Medium
Can I keep driving?
Yes, but with caution
Estimated cost
$80 to $450
Difficulty
Medium
System
Transmission
Applies to
Depends on the manufacturer

Common in: Dodge, Jeep

Updated Reviewed by Renzo Chacca

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What the P1756 code means

P1756 is a manufacturer-specific code: the 1 in the second position means each automaker defines what it means, not the generic SAE standard. The most widespread definition is the one used by Chrysler, Dodge, Jeep and Ram. If your vehicle is another brand, confirm the code text with a scan tool that supports that manufacturer.

ManufacturerMeaning of P1756
Chrysler, Dodge, Jeep and RamGovernor pressure not equal to target at 15 to 20 psi

The three and four speed Chrysler transmissions (42RE, 44RE, 46RE, 47RE) control governor pressure with a solenoid and a sensor.

The computer sets the P1756 code when the measured pressure does not match the commanded pressure. It is usually caused by the governor solenoid, its filter or the fluid.

Before you start repairs, confirm the make, model, year and engine. With manufacturer codes, the same number can change even between engines from the same brand.

P1756 code symptoms

  • Erratic shifting, or no gear changes.
  • Check engine light on.

Likely causes of the P1756 code

  1. Governor solenoid. Confirm it with the tests in the diagnosis section.
  2. Governor pressure sensor. Confirm it by comparing its reading with the real value.
  3. Dirty fluid or clogged filter. Check the level, condition and viscosity.
  4. Transmission connector. Check the lock tab, the pins and any sign of moisture or corrosion.

How to diagnose the P1756 code step by step

  1. Check the fluid and the filter.
  2. Compare commanded and actual pressure with the scan tool.
  3. Inspect the connector for corrosion and loose pins.

How to fix the P1756 code

  • Replace the solenoid or the sensor.
  • Change the fluid and the filter.

Technical reference data

  • Use the ATF+4 fluid that Chrysler specifies.
  • P1xxx codes are manufacturer-specific: confirm the definition with a scan tool that supports your brand.
  • Reference values: check the manufacturer data for your vehicle.

Brand-specific notes

A fluid and filter service is the cheapest place to start, and it fixes more of these than people expect.

P1756 on Chrysler

Very common on the Dodge Ram, Durango, Dakota and Jeep Grand Cherokee.

If your vehicle is another brand, check the table above for the meaning its manufacturer gives this code and confirm it with a compatible scan tool.

Frequently asked questions about P1756

What does the P1756 code mean on a Chrysler?
It means the governor pressure does not match the target at 15 to 20 psi. The check engine light comes on.
Does P1756 mean the same thing on every brand?
No. It is a manufacturer-specific code, so on other brands it may not exist or may mean something different. Confirm it with a scan tool that supports your make.
Can I drive with a P1756 code?
With caution. A P1756 code can cause erratic shifting, so drive gently and avoid heavy loads until it is checked.
How much does it cost to fix P1756?
Roughly $80 to $450 on a Chrysler. A fluid and filter change is at the low end, while a new solenoid or sensor costs more.
Will a P1756 code clear itself?
Not while the pressure control is off target. After the repair, clear the code and drive to confirm it does not return.
What is the most common cause of P1756?
The governor solenoid, its filter or dirty fluid. The governor pressure sensor and the transmission connector come next.

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