Transmission Fluid Pressure Sensor/Switch D Circuit Range/Performance
The P0876 code means the vehicle's onboard diagnostic system has detected: Transmission Fluid Pressure Sensor/Switch D Circuit Range/Performance. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $150 - $800 (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
- Check Engine Light illuminated
- Shift quality issues in specific gear transitions
- Slight transmission slip or flare
- TCM may limit available gears
Probable Causes (Ranked by Likelihood)
- Sensor D pressure reading inconsistent with expected values Very High
- Contaminated or degraded transmission fluid High
- Partial hydraulic passage restriction at sensor D Moderate
- Valve body wear affecting sensor D circuit Low
Step-by-Step Diagnostic Procedure
-
Compare sensor D readings to mechanical gauge at the D pressure tap
-
Perform transmission fluid and filter service
-
Monitor sensor D at various operating conditions
-
Check for manufacturer TSBs related to sensor D calibration
Frequently Asked Questions
Can contaminated fluid cause P0876?
Yes, old or contaminated transmission fluid can cause inconsistent pressure readings across all sensors. A fluid and filter change is a good starting point.
Is a range/performance code always the sensor's fault?
No, the sensor may be reading correctly but the actual hydraulic pressure is off. Internal wear, clogged passages, or a failing pump can all cause abnormal pressure that the sensor accurately reports.
Should I replace all pressure sensors at once?
Not necessarily. If only sensor D is showing issues, start with that sensor. However, if multiple sensors show range/performance codes, the root cause is likely systemic.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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