B133B Code - Reverse Gear Status Not Plausible
Quick Answer
The B133B code indicates that the reverse gear status is not plausible, meaning that there is a discrepancy between what the transmission is indicating and what the vehicle's computer is receiving. Common causes include Faulty reverse gear sensor, Wiring issues or shorts in the reverse gear circuit, Transmission fluid contamination or low fluid level. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B133B indicates Reverse Gear Status Not Plausible.
- Common causes
- Common causes include Faulty reverse gear sensor, Wiring issues or shorts in the reverse gear circuit, Transmission fluid contamination or low fluid level.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code B133B Description
The B133B code indicates that the reverse gear status is not plausible, meaning that there is a discrepancy between what the transmission is indicating and what the vehicle's computer is receiving. This can lead to issues with shifting into reverse gear or cause the vehicle to not engage reverse gear at all. This can affect the vehicle's performance by making it difficult or impossible to reverse, which can be a safety concern. The underlying cause of this issue could be related to faulty sensors, wiring issues, or transmission problems.
Common Causes of B133B
- Faulty reverse gear sensor
- Wiring issues or shorts in the reverse gear circuit
- Transmission fluid contamination or low fluid level
- Transmission solenoid malfunction
- Mechanical issues within the transmission
Symptoms of B133B
- Difficulty shifting into reverse gear
- Delayed engagement when shifting into reverse
- Vehicle not moving in reverse when gear is selected
- Jerky or erratic movement when reversing
- Dashboard warning light indicating transmission issue
How to Fix B133B
- Diagnose the issue using a scan tool to identify the specific cause of the problem.
- Inspect the wiring and connectors related to the reverse gear sensor for any damage or corrosion.
- Check the transmission fluid level and condition, topping off or replacing as necessary.
- Test the transmission solenoids and replace any faulty ones.
- If mechanical issues are found in the transmission, a rebuild or replacement may be necessary.
Cost to Fix B133B
The cost of repairing a B133B code can vary depending on the specific cause of the issue. On average, the repair cost can range from $200 to $600, including parts and labor. However, it's important to note that diagnostic time and labor rates can vary, so it's recommended to check with local auto repair shops for a more accurate estimate.
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Code B133B Information for Specific Makes
- B133B Buick — Reverse Gear Status Not Plausible
- B133B Cadillac — Reverse Gear Status Not Plausible
- B133B Chevrolet — Reverse Gear Status Not Plausible
- B133B GMC — Reverse Gear Status Not Plausible
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