B2738 Code - Center Pedestrian Protection Satellite Acceleration Sensor
Quick Answer
The B2738 diagnostic trouble code (DTC) relates to the Center Pedestrian Protection Satellite Acceleration Sensor. Common causes include Sensor malfunction or failure, Wiring issues or shorts in the sensor circuit, ECU failure or communication errors. 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
- B2738 indicates Center Pedestrian Protection Satellite Acceleration Sensor.
- Common causes
- Common causes include Sensor malfunction or failure, Wiring issues or shorts in the sensor circuit, ECU failure or communication errors.
- 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 B2738 Description
The B2738 diagnostic trouble code (DTC) relates to the Center Pedestrian Protection Satellite Acceleration Sensor. This sensor is a crucial component of the vehicle's safety system, specifically designed to detect sudden changes in acceleration that may indicate a collision with a pedestrian in the vehicle's path. When this sensor detects such an event, it triggers the activation of safety features such as automatic emergency braking or pedestrian detection systems to mitigate the impact and reduce the severity of potential injuries.
Common Causes of B2738
- Sensor malfunction or failure
- Wiring issues or shorts in the sensor circuit
- ECU failure or communication errors
- Physical damage to the sensor or related components
- Corrosion or moisture damage in the sensor system
Symptoms of B2738
- Illumination of the check engine light on the dashboard
- Malfunction of automatic emergency braking or pedestrian detection systems
- Inconsistent or erratic behavior of the vehicle's safety features
- Reduced effectiveness of pedestrian protection systems
- Difficulty detecting pedestrians or obstacles in the vehicle's path
How to Fix B2738
- Perform a comprehensive diagnostic scan to identify the specific cause of the B2738 code.
- Inspect the Center Pedestrian Protection Satellite Acceleration Sensor for any signs of damage or malfunction.
- Check the wiring and connections associated with the sensor for any faults or shorts.
- Test the ECU for communication errors and ensure proper functionality.
- Replace or repair any faulty components, such as the sensor, wiring, or ECU, as needed to resolve the issue.
Cost to Fix B2738
The typical repair costs for addressing the B2738 code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, repairing a Center Pedestrian Protection Satellite Acceleration Sensor malfunction can range from $200 to $500, including parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. Auto repair shops typically charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships and lower at independent shops. To obtain a more precise estimate, it's recommended to consult with local auto repair shops for specific pricing information.
Tech Notes for B2738
B2738-78 CENTER PEDESTRIAN PROTECTION SATELLITE SENSOR ALIGNMENT OR ADJUSTMENT INCORRECT
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Code B2738 Information for Specific Makes
- B2738 Chrysler — Center Pedestrian Protection Satellite Acceleration Sensor
- B2738 Dodge — Center Pedestrian Protection Satellite Acceleration Sensor
- B2738 Jeep — Center Pedestrian Protection Satellite Acceleration Sensor
- B2738 RAM — Center Pedestrian Protection Satellite Acceleration Sensor
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
Frequently Asked Questions about B2738 Code
1. What are the common symptoms of OBDII code B2738 (Center Pedestrian Protection Satellite Acceleration Sensor)?
- Common symptoms include the illumination of the check engine light, decreased vehicle performance, and potential issues with the pedestrian protection system.
2. What could cause OBDII code B2738 to trigger?
- This code may be triggered by a faulty center pedestrian protection satellite acceleration sensor, wiring issues, or a malfunction in the pedestrian protection system.
3. How can I diagnose the cause of OBDII code B2738?
- Diagnosis involves using a professional OBDII scanner to read the code, inspecting the wiring and connections related to the sensor, and testing the sensor itself for proper functionality.
4. Can I drive my vehicle with OBDII code B2738?
- It is not recommended to drive the vehicle with this code present, as it may indicate a problem with the pedestrian protection system that could affect safety.
5. How do I repair OBDII code B2738?
- Repairing this code typically involves replacing the faulty center pedestrian protection satellite acceleration sensor and addressing any wiring issues or system malfunctions.
6. Are there any DIY tips for fixing OBDII code B2738?
- While some enthusiasts may attempt to replace the sensor themselves, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure safety and accuracy.
7. Is OBDII code B2738 a common issue in certain vehicle makes and models?
- This code may be more common in vehicles equipped with advanced pedestrian protection systems, but it can potentially occur in any vehicle with the relevant sensor.
8. Can resetting the OBDII code B2738 resolve the issue temporarily?
- Resetting the code may temporarily clear the check engine light, but if the underlying problem is not fixed, the code is likely to reappear.
9. How can I prevent OBDII code B2738 from returning after repair?
- Regular maintenance checks, prompt repairs of any related issues, and following recommended service schedules can help prevent the recurrence of this code.
10. Is it necessary to visit a dealership for OBDII code B2738 repair?
- While a dealership may have specialized knowledge and equipment for this repair, an experienced independent mechanic can also effectively diagnose and repair this issue.
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