AutoCodes – Generic – B1630

B1630 Code - PRNDL Reverse Input Short Circuit To Ground

Quick Answer

The Body Control Module (BCM) monitors the PRNDL Switch. Common causes include Faulty PRNDL Switch, PRNDL Switch harness is open or shorted, PRNDL Switch 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: B1630 indicates PRNDL Reverse Input Short Circuit To Ground.
Common causes: Common causes include Faulty PRNDL Switch, PRNDL Switch harness is open or shorted, PRNDL Switch 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.

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Code Popularity 20,569

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1630 Description

The Body Control Module (BCM) monitors the PRNDL Switch. The BCM sets the OBDII code when the PRNDL Switch is not to factory specifications.

OBDII Code B1630 - PRNDL Reverse Input Short Circuit To Ground - AutoCodes.com — B1630 Code - PRNDL Reverse Input Short Circuit To Ground

What does this mean?

What are the Possible Causes of the DTC B1630?

Faulty PRNDL Switch
PRNDL Switch harness is open or shorted
PRNDL Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1630?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1630 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.

Need more information about the B1630 code?

Need more information on how to fix the B1630 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1630 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1630 Chrysler — Right Low Beam Control Circuit High
B1630 Dodge — Right Low Beam Control Circuit High
B1630 Jeep — Right Low Beam Control Circuit High
B1630 Lexus — Rear Airbag Sensor RH Circuit Malfunction
B1630 RAM — Right Low Beam Control Circuit High
B1630 Scion — Rear Airbag Sensor Right Circuit Malfunction
B1630 Toyota — Rear Airbag Sensor Right Circuit Malfunction

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1630 Code

1. What are common symptoms of OBDII code B1630 (PRNDL Reverse Input Short Circuit To Ground)?

Common symptoms include the inability to shift into reverse, illuminated dashboard warning lights, and erratic behavior of the transmission.

2. What are possible causes of OBDII code B1630?

Possible causes of this code include damaged wiring in the transmission reverse input circuit, a short circuit to ground, or a faulty transmission range sensor.

3. How can I diagnose OBDII code B1630?

Diagnosis typically involves using a scan tool to read the trouble codes, conducting a visual inspection of the wiring and connectors, and performing circuit testing to identify the location of the short circuit.

4. Is it safe to drive with OBDII code B1630?

It is not recommended to drive with this code as it can lead to transmission issues and safety concerns. It's best to address the problem promptly to avoid potential damage.

5. Can I repair OBDII code B1630 myself?

Repairing this code may require advanced automotive knowledge and tools. It is recommended to consult a professional mechanic to accurately diagnose and repair the issue.

6. How much does it cost to fix OBDII code B1630?

The cost of fixing this code can vary depending on the underlying cause. It may involve replacing damaged wiring, repairing connectors, or replacing the transmission range sensor. Costs can range from a few hundred to over a thousand dollars.

7. Can OBDII code B1630 cause other problems in the vehicle?

Yes, if left unresolved, this code can lead to further transmission issues, affect the vehicle's drivability, and potentially cause damage to other components in the transmission system.

8. How long does it take to repair OBDII code B1630?

The repair time can vary depending on the extent of the damage and the specific cause of the code. It may take a few hours to a full day to diagnose and fix the issue.

9. Will resetting the trouble codes make OBDII code B1630 go away?

Resetting the trouble codes may temporarily clear the warning lights, but if the underlying issue causing the code is not addressed, it is likely to reappear once the problem is detected again.

10. Can extreme weather conditions affect OBDII code B1630?

Extreme weather conditions can potentially exacerbate existing wiring issues or cause new ones, leading to the occurrence of OBDII code B1630. It is essential to keep the vehicle well-maintained to prevent weather-related damage.