P2741Transmission
Transmission Fluid Temperature Sensor B Circuit Range/Performance
P2741 means the transmission fluid temperature sensor B is out of the expected range or reading implausibly, so temperature data may be inaccurate.
🚗 Drivable short term but get it checked. Inaccurate temperature data affects shift and lockup control.
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🎯 Top Causes, Ranked by Likelihood
#1Faulty fluid temperature sensor B$100-$350
The sensor reads out of range or drifts.
#2High resistance in wiring$100-$350
Corroded connections skew readings.
#3Low fluid level$100-$300
Low fluid can cause implausible temperature readings.
#4TCM fault$500-$1200
The reading circuit has failed.
🩺 Common Symptoms
- Check engine light
- Harsh or erratic shifts
- Torque converter lockup problems
- Reduced fuel economy
💰 Repair Cost: DIY vs Shop
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🔧 How to Diagnose P2741
1Scan live data and compare to a known good temperature
2Inspect wiring for high resistance
3Test sensor resistance across temperature
4Replace the sensor if out of spec
❓ Frequently Asked Questions
Can I drive with P2741?
Yes for a short time, but get it checked because shift control depends on accurate temperature.
What does range performance mean?
The sensor value is present but implausible for the current conditions.
How much to fix P2741?
Usually $150-$500 including a sensor and labor.
🔗 Related Codes
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