AutoCodes – KIA – P1630 KIA

P1630 KIA Code - CAN Communication BUS OFF

Quick Answer

Without Controller Area Network (CAN) communication, an independent pin and wiring are needed to receive sensor information from the Engine Control Module (ECM). Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module 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: P1630 KIA indicates CAN Communication BUS OFF.
Common causes: Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module 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 6,757

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 Dec 26, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1630 KIA Description

Without Controller Area Network (CAN) communication, an independent pin and wiring are needed to receive sensor information from the Engine Control Module (ECM). The more information to be communicated, the more wirings are required. In the case of CAN communication type, all the information needs to be communicated among control modules such as Transmission Control Module (TCM), ECM, and Transfer Case Control Module (TCCM) use CAN lines. Engine coolant temperature information is used for lock-up control. If the TCM detects BUS off signal in CPU, the DTC will be set.

OBDII Code P1630 KIA - CAN Communication BUS OFF - AutoCodes.com — P1630 KIA Code - CAN Communication BUS OFF

What does this mean?

What are the Possible Causes of the DTC P1630 KIA?

Faulty Engine Control Module (ECM)
Engine Control Module harness is open or shorted
Engine Control Module circuit poor electrical connection

How to Fix the DTC P1630 KIA?

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 P1630 KIA 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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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 P1630 KIA Code

1. What are the common symptoms of OBDII code P1630 KIA (CAN Communication BUS OFF)?

- Common symptoms include problems with the vehicle's communication systems, such as issues with the transmission, engine performance, or dashboard warning lights.

2. What are the possible causes of OBDII code P1630 KIA (CAN Communication BUS OFF)?

- The code may be triggered by issues with the CAN communication network, faulty wiring, a defective CAN bus controller, or a problem with the powertrain control module (PCM).

3. How can I diagnose the cause of OBDII code P1630 KIA (CAN Communication BUS OFF)?

- Diagnosing the issue may require using a scan tool to check for other related trouble codes, inspecting the wiring and connections in the CAN bus system, and testing the components for proper functionality.

4. Can a DIY enthusiast repair OBDII code P1630 KIA (CAN Communication BUS OFF)?

- While some simple wiring or connection issues may be resolved by a knowledgeable DIYer, diagnosing and repairing complex CAN communication problems often requires professional expertise and specialized tools.

5. How much does it typically cost to repair OBDII code P1630 KIA (CAN Communication BUS OFF)?

- The cost of repair can vary depending on the exact cause of the issue. It's advisable to consult with a qualified mechanic or dealership for an accurate diagnosis and repair estimate.

6. Is it safe to continue driving with OBDII code P1630 KIA (CAN Communication BUS OFF) present?

- Driving with this code present can potentially lead to further communication system malfunctions and affect the vehicle's performance. It's best to address the issue promptly to prevent any additional problems.

7. Can resetting the OBDII code P1630 KIA (CAN Communication BUS OFF) temporarily fix the issue?

- Resetting the code may temporarily clear the fault, but if the underlying issue is not addressed, the code is likely to return. It's essential to diagnose and repair the root cause of the problem.

8. Are there any common mistakes to avoid when dealing with OBDII code P1630 KIA (CAN Communication BUS OFF)?

- Avoid overlooking loose or damaged wiring connections, assuming the PCM is always the culprit, or attempting repairs without proper diagnostic tools and knowledge.

9. How long does it typically take to repair OBDII code P1630 KIA (CAN Communication BUS OFF)?

- The repair time can vary based on the complexity of the issue and availability of parts. Some repairs may be completed in a few hours, while others could take longer depending on the diagnosis.

10. Can extreme weather conditions contribute to triggering OBDII code P1630 KIA (CAN Communication BUS OFF)?

- Extreme weather conditions, such as excessive heat or moisture, can potentially affect the electrical connections and components in the CAN communication system, leading to the triggering of the code.