Transmission Range Sensor C Circuit
The P2827 code means the vehicle's onboard diagnostic system has detected: Transmission Range Sensor C Circuit. This is a critical severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $100 - $500 (parts and labor)
Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.
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Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.
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Common Symptoms
- Additional range sensor showing fault
- Gear selection confirmation lost
- Redundant position check failed
- Check engine light on
Probable Causes (Ranked by Likelihood)
- Failed range sensor C Very High
- Sensor C wiring damage High
- Sensor C misalignment Moderate
- TCM C input fault Low
Step-by-Step Diagnostic Procedure
-
Test range sensor C output in all positions
-
Check sensor C wiring and connector
-
Verify sensor C alignment with manual valve
-
Compare sensors A, B, and C readings
Frequently Asked Questions
Why do some transmissions have three range sensors?
Advanced transmissions use multiple range sensors for redundancy and precise position verification. If one sensor fails, the others provide backup.
Can sensor C disagree with sensors A and B?
Yes. If sensor C gives a different reading than A and B, the TCM detects a correlation error and sets P2827 to flag the discrepancy.
Is sensor C accessible externally?
On most transmissions, range sensors are mounted on the outside of the case and can be accessed without removing the transmission.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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