B1628 Code - PRNDL Reverse Input Open Circuit
Quick Answer
The B1628 diagnostic trouble code indicates that there is an open circuit in the PRNDL Reverse Input circuit. Common causes include Faulty transmission range sensor, Damaged wiring or connectors in the PRNDL Reverse Input circuit, Corrosion or poor connections in the sensor circuit. 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
- B1628 indicates PRNDL Reverse Input Open Circuit.
- Common causes
- Common causes include Faulty transmission range sensor, Damaged wiring or connectors in the PRNDL Reverse Input circuit, Corrosion or poor connections in the sensor circuit.
- 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 B1628 Description
The B1628 diagnostic trouble code indicates that there is an open circuit in the PRNDL Reverse Input circuit. PRNDL stands for Park, Reverse, Neutral, Drive, and Low, which are the different gear positions in an automatic transmission. This code specifically points to an issue with the transmission range sensor, which is responsible for detecting the gear position selected by the driver and sending this information to the vehicle's engine control module (ECM).
Common Causes of B1628
- Faulty transmission range sensor
- Damaged wiring or connectors in the PRNDL Reverse Input circuit
- Corrosion or poor connections in the sensor circuit
- ECM software or hardware issues
- Mechanical damage to the transmission range sensor
Symptoms of B1628
- Harsh shifting between gears
- Transmission not shifting into reverse
- Delayed engagement when shifting into reverse
- Inaccurate gear indicator on the dashboard
- Check Engine Light illuminated
How to Fix B1628
- Begin by diagnosing the specific cause of the open circuit in the PRNDL Reverse Input circuit using a scan tool to retrieve the trouble codes and performing a visual inspection of the transmission range sensor and related components.
- Inspect the wiring harness and connectors for any damage, corrosion, or loose connections. Repair or replace any damaged wiring as needed.
- Test the transmission range sensor for proper operation using a multimeter to check for continuity and proper voltage signals.
- If the transmission range sensor is faulty, replace it with a new sensor following the manufacturer's specifications and clear the trouble codes from the ECM.
- Perform a test drive to verify that the repair has resolved the issue and ensure that the transmission shifts correctly through all gears.
Cost to Fix B1628
The cost of repairing a PRNDL Reverse Input Open Circuit issue can vary depending on the specific cause of the problem and the make and model of the vehicle. In general, the cost of parts for a transmission range sensor replacement can range from $50 to $200, while the labor cost for the repair can be anywhere from $100 to $300. Overall, the total cost of repairing a B1628 code may range from $150 to $500. It is recommended to consult with a professional mechanic or auto repair shop for a more accurate cost estimate based on your vehicle's specific needs and location.
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Code B1628 Information for Specific Makes
- B1628 Chrysler — Cargo Lamp Control Circuit High
- B1628 Dodge — Cargo Lamp Control Circuit High
- B1628 Jeep — Cargo Lamp Control Circuit High
- B1628 Lexus — Side Airbag Sensor Assembly Left Initialization Incomplete
- B1628 RAM — Cargo Lamp Control Circuit High
- B1628 Scion — Side Airbag Sensor Assembly Left Initialization Incomplete
- B1628 Toyota — Side Airbag Sensor Assembly Left Initialization Incomplete
Frequently Asked Questions about B1628 Code
1. What are common symptoms of OBDII code B1628 - PRNDL Reverse Input Open Circuit?
- Common symptoms include the inability to shift into reverse, erratic shifting behavior, and illuminated warning lights on the dashboard.
2. What are the possible causes of OBDII code B1628?
- The code B1628 can be triggered by a faulty reverse input circuit, damaged wiring, a defective transmission range sensor, or a malfunctioning control module.
3. How serious is OBDII code B1628 - PRNDL Reverse Input Open Circuit?
- This code can affect the proper functioning of the transmission system, potentially leading to issues with shifting and overall vehicle performance. It is important to address this issue promptly.
4. How can I diagnose the cause of OBDII code B1628?
- Diagnosing the cause of B1628 typically involves inspecting the reverse input circuit, checking for damaged wiring, testing the transmission range sensor, and using a diagnostic scanner to pinpoint the exact issue.
5. Can I drive my vehicle with OBDII code B1628 present?
- It is not recommended to drive the vehicle with code B1628 present, as it can result in transmission problems and safety issues. It is best to address the issue before driving the vehicle.
6. How can I repair OBDII code B1628 - PRNDL Reverse Input Open Circuit?
- Repairing B1628 may involve repairing or replacing damaged wiring, fixing the reverse input circuit, replacing the transmission range sensor, or reprogramming the control module as necessary.
7. Will OBDII code B1628 cause my vehicle to go into "limp mode"?
- In some cases, OBDII code B1628 can cause the vehicle to go into "limp mode" to prevent further damage. This mode limits the vehicle's performance to protect the transmission.
8. Can a DIY enthusiast fix OBDII code B1628 at home?
- Depending on the underlying cause, some DIY enthusiasts with the necessary tools and expertise may be able to fix OBDII code B1628 at home. However, complex issues may require professional assistance.
9. Is it necessary to reset the OBDII code B1628 after repairs?
- Yes, it is important to reset the OBDII code B1628 after making repairs to clear the fault code from the system. This can be done using an OBDII scanner or by disconnecting the car battery for a few minutes.
10. How can I prevent OBDII code B1628 from occurring in the future?
- Regularly inspecting the transmission system, addressing any wiring issues promptly, and ensuring proper maintenance of the transmission range sensor can help prevent OBDII code B1628 from occurring in the future.
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