P0941: Hydraulic Oil Temperature Sensor Circuit Intermittent

The hydraulic oil temperature signal jumps or drops out briefly, too short or irregular for a lasting low or high fault. Since fluid temperature changes slowly, a sudden step is a clear sign of an electrical problem rather than a real temperature change. No manufacturer documents this code publicly. Ferrari's DCT bulletin shows the related sensor at the radiator outlet and gearbox inlet, with its steady faults under P0938 to P0940. CARB requires circuit checks on transmission sensors. P0937 is the general circuit fault, P0938 plausibility, P0939 and P0940 low and high. For the driver this means a warning that may come and go and shift quality that changes from one moment to the next.

Symptoms

• Warning light comes and goes
• Shift quality varies unpredictably

Most likely causes

• Loose contact at the sensor connector under vibration or heat
• Chafed wiring near hot gearbox or cooler parts
• Sensor with an intermittent internal fault

What to check, in order

Start with the simplest. You can tick off each step.

1. Stop and check the level with the dipstick or the car's menu
2. Gently move the wiring with the engine running and watch whether the reading changes.
3. Check for leaks and inspect the sensor's connector
4. Measure the actual pressure with a gauge
5. Check the valve or pump according to the manual

Good to know

• Repair difficulty: medium
• It affects emissions.

What each character of P0941 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• 9: Transmission
• 41: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0941?

If the red oil warning light comes on, stop the car in a safe place and turn off the engine. Do not continue until you have confirmed the level and pressure.

What causes code P0941?

The most common causes are: loose contact at the sensor connector under vibration or heat; chafed wiring near hot gearbox or cooler parts; sensor with an intermittent internal fault.

Related codes

• P0937Hydraulic Oil Temperature Sensor Circuit
• P0938Hydraulic Oil Temperature Sensor Range/Performance
• P0939Hydraulic Oil Temperature Sensor Circuit Low
• P0940Hydraulic Oil Temperature Sensor Circuit High

Sources

• law.cornell.edu: 13 CCR 1968.2
• static.nhtsa.gov: MC 10168599 0001

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.