B2738 Code - Center Pedestrian Protection Satellite Acceleration Sensor
Quick Answer
The Pedestrian Protection Satellite Sensors perform internal self-tests and communicate the sensors status using power supplied by the Occupant Restraint Controller (ORC). Common causes include Faulty Center Pedestrian Protection Satellite Acceleration Sensor, Center Pedestrian Protection Satellite Acceleration Sensor harness is open or shorted, Center Pedestrian Protection Satellite Acceleration Sensor circuit poor electrical connection. 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 Faulty Center Pedestrian Protection Satellite Acceleration Sensor, Center Pedestrian Protection Satellite Acceleration Sensor harness is open or shorted, Center Pedestrian Protection Satellite Acceleration Sensor circuit poor electrical connection.
- 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.
Code B2738 Description
This DTC sets when the ORC receives notification of a self test failure within the impact sensor within 100 ms for continuous test and 1 second for startup test. Once set, this DTC is latched for the entire ignition cycle or until the clear faults scan tool command is used, depending on the specific condition that sets the DTC.
What are the Possible Causes of the DTC B2738?
- Faulty Center Pedestrian Protection Satellite Acceleration Sensor
- Center Pedestrian Protection Satellite Acceleration Sensor harness is open or shorted
- Center Pedestrian Protection Satellite Acceleration Sensor circuit poor electrical connection
- Faulty Occupant Restraint Controller (ORC)
How to Fix the DTC B2738?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
B2738-78 CENTER PEDESTRIAN PROTECTION SATELLITE SENSOR ALIGNMENT OR ADJUSTMENT INCORRECT
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2738 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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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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