Sunroof Seal Pressure Sensor
The B0735 code means the vehicle's onboard diagnostic system has detected: Sunroof Seal Pressure Sensor. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- hard
- Estimated cost
- $150 - $600 (parts and labor)
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Common Symptoms
- Sunroof does not open or close
- Sunroof opens but does not close
- Sunroof makes grinding noise
- Sunroof leaks water into cabin
Probable Causes (Ranked by Likelihood)
- Faulty sunroof motor Very High
- Clogged sunroof drain tubes High
- Damaged sunroof track or guide Moderate
- Sunroof control module failure Low
Step-by-Step Diagnostic Procedure
-
Test sunroof motor with direct power
-
Inspect sunroof tracks for debris
-
Check sunroof drain tube flow
-
Perform sunroof initialization procedure
Frequently Asked Questions
Why does my sunroof not close?
Common causes include a failed motor, stuck track, or the need for an initialization procedure after battery disconnection.
Can water leak from a sunroof?
Yes, sunroofs have drain tubes that can clog with debris, causing water to overflow into the cabin.
How do I manually close a stuck sunroof?
Most sunroofs have an emergency close bolt accessible through the headliner that can be turned with an Allen wrench.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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