P2784
Input/Turbine Speed Sensor A/B Correlation
P2784 is an OBD-II diagnostic trouble code meaning: Input/Turbine Speed Sensor A/B Correlation. Common causes: input shaft speed sensor malfunction, turbine speed sensor malfunction. Estimated repair cost: $28–89.
Symptoms
- Incorrect gear shifting
- Switching delays
- Switching to emergency mode of the gearbox
- Increased fuel consumption
- Check Engine Light Illuminates
Causes
- Input shaft speed sensor malfunction
- Turbine speed sensor malfunction
- Problems with wiring or connectors
- Mechanical problems in the transmission
- Transmission control module (TCM) malfunction
How to Fix
- Check the condition and connections of the speed sensors
- Check the integrity of the wiring to the sensors
- Check sensor resistance (compare with specifications)
- Carry out diagnostics of the mechanical part of the transmission
- If necessary, replace faulty sensors
Related codes
Error P2784 by Vehicle Brand
FAQ
What does the P2784 code mean?
P2784 is an OBD-II diagnostic trouble code that indicates: Input/Turbine Speed Sensor A/B Correlation
What causes a P2784 error code?
The most common causes of P2784 include: Input shaft speed sensor malfunction; Turbine speed sensor malfunction; Problems with wiring or connectors; Mechanical problems in the transmission.
How do I fix a P2784 diagnostic trouble code?
To fix P2784: Check the condition and connections of the speed sensors. Check the integrity of the wiring to the sensors. Check sensor resistance (compare with specifications). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2784?
Limited driving only, diagnose soon
How much does it cost to fix P2784?
The estimated repair cost for P2784 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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