What Does P0941 Mean?
DTC P0941 indicates the hydraulic oil temperature sensor circuit is exhibiting intermittent signal dropouts, spikes, or erratic fluctuations that the TCM cannot reconcile with normal thermal behavior. The temperature reading may jump between extreme values or briefly disappear, indicating a marginal electrical connection rather than a hard circuit failure. These intermittent faults often worsen over time as connections degrade further.
Common Causes
35%
Loose or corroded terminals in the sensor connector
25%
Wiring harness with intermittent break (cracked conductor under insulation)
20%
Temperature sensor developing internal intermittent failure
10%
TCM connector with poor pin tension on the temperature sensor input
10%
Vibration-induced contact issues due to improper harness routing or missing clips
Diagnostic Steps
1
Step 1: Monitor the hydraulic oil temperature PID on a scan tool while wiggling the sensor connector and harness at multiple points. Look for sudden value changes or signal dropouts.
2
Step 2: Inspect the sensor connector terminals for corrosion, green oxidation, or evidence of moisture. Clean with electrical contact cleaner and verify terminal tension.
3
Step 3: Check the wiring harness for proper routing and secure mounting clips. Inspect for chafing where the harness contacts body panels, brackets, or other components.
4
Step 4: Perform a road test while monitoring the temperature PID. Note if the intermittent occurs during specific conditions such as bumps, acceleration, or temperature changes.
5
Step 5: If the intermittent source is not found through wiggle testing, replace the sensor as a precaution. Apply dielectric grease to the connector, clear codes, and verify stable readings over multiple drive cycles.
Estimated Repair Cost
$120 - $500
Parts + labor, varies by vehicle and location
DTC P0941 indicates the hydraulic oil temperature sensor circuit is exhibiting intermittent signal dropouts, spikes, or erratic fluctuations that the TCM cannot reconcile with normal thermal behavior. The temperature reading may jump between extreme values or briefly disappear, indicating a marginal...
The most common cause of P0941 (Hydraulic Oil Temperature Sensor Circuit Intermittent) is: Loose or corroded terminals in the sensor connector
Typical repair costs for P0941 range from $120 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Intermittent temperature sensor signals may cause occasional shift quality variations or momentary protective mode activation. While not typically an immediate safety hazard, the unpredictable nature warrants diagnosis to prevent progression to a hard failure during critical driving situations.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0941 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission / Clutch Hydraulic System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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