Driver Seat Forward/Back Position Sensor Circuit High
The B0203 code means the vehicle's onboard diagnostic system has detected: Driver Seat Forward/Back Position Sensor Circuit High. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $70 - $320 (parts and labor)
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Common Symptoms
- Seat position reads full rearward
- Memory recall moves seat wrong
- Seat position indicator incorrect
- Intermittent seat memory faults
Probable Causes (Ranked by Likelihood)
- Open circuit in sensor wiring Very High
- Failed position sensor High
- Corroded connector causing high resistance Moderate
- BCM reference voltage fault Low
Step-by-Step Diagnostic Procedure
-
Measure sensor signal voltage
-
Check for open circuits in wiring
-
Inspect connector for corrosion
-
Verify BCM 5V reference supply
Frequently Asked Questions
What is the difference between low and high circuit codes?
Low means signal near ground voltage, high means near reference voltage. Both indicate sensor or wiring faults.
Will the seat still move?
Yes, power seat adjustments work normally but memory positions may be inaccurate.
Can water damage cause this?
Yes, spilled liquids can corrode connectors under the seat and cause high resistance readings.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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