AutoCodes – Generic – P130B

P130B Code - Knock Sensor 4 Circuit

Quick Answer

The Knock Sensor contains a piezo crystal. Common causes include Faulty Knock Sensor, Knock Sensor harness is open or shorted, Knock 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: P130B indicates Knock Sensor 4 Circuit.
Common causes: Common causes include Faulty Knock Sensor, Knock Sensor harness is open or shorted, Knock 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.

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Code Popularity 9,254

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 13, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P130B Description

The Knock Sensor contains a piezo crystal. When combustion knock occurs in an engine, a distinct noise is produced. The sensor turns vibrations from this noise into an electrical signal. The Engine Control Module (ECM) uses the signal to retard ignition timing and restore normal combustion in the affected engine cylinder. The Knock Sensor may be supplied with a reference voltage from the engine ECM. This allows the ECM to monitor the continuity of the Knock Sensor circuit.
The ECM monitors the Knock Sensor. The ECM sets the Diagnostic Trouble Code (DTC) when the Knock Sensor is not to factory specifications.

OBDII Code P130B - Knock Sensor 4 Circuit - AutoCodes.com — P130B Code - Knock Sensor 4 Circuit

What does this mean?

What are the Possible Causes of the DTC P130B?

Faulty Knock Sensor
Knock Sensor harness is open or shorted
Knock Sensor circuit poor electrical connection

How to Fix the DTC P130B?

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 P130B 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 P130B code?

Need more information on how to fix the P130B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P130B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P130B Ford — Knock Sensor 4 Circuit

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 P130B Code

1. What are the common symptoms of OBDII code P130B (Knock Sensor 4 Circuit)?

- The common symptoms include engine pinging or knocking noises, reduced engine performance, and potentially decreased fuel efficiency.

2. What are the possible causes of OBDII code P130B?

- The code P130B can be triggered by issues such as a faulty knock sensor, damaged wiring or connectors related to the knock sensor, or engine mechanical problems causing abnormal knocking.

3. How can I diagnose the cause of OBDII code P130B?

- Diagnosing the cause of code P130B typically involves using a diagnostic scanner to read the code, testing the knock sensor and related components for proper functionality, and inspecting the wiring for any damage or corrosion.

4. Can I continue driving with OBDII code P130B present?

- It is not recommended to drive with OBDII code P130B present, as it can lead to engine damage and further issues if the underlying cause is not addressed promptly.

5. How can I repair OBDII code P130B (Knock Sensor 4 Circuit)?

- Repairing code P130B usually involves replacing the faulty knock sensor, repairing or replacing damaged wiring or connectors, and clearing the code using a diagnostic scanner.

6. Are there any DIY tips for fixing OBDII code P130B?

- While some basic automotive knowledge is required, DIY enthusiasts can attempt to replace the knock sensor or repair damaged wiring themselves. However, seeking professional help is recommended for accurate diagnosis and repair.

7. Is OBDII code P130B a serious issue?

- OBDII code P130B should be taken seriously as it can affect engine performance and potentially lead to more severe problems if left unaddressed. It is advisable to have the issue diagnosed and repaired as soon as possible.

8. Can a faulty knock sensor cause other problems in the vehicle?

- Yes, a faulty knock sensor can cause issues such as decreased engine performance, increased emissions, and potential damage to the engine if abnormal knocking is not detected and addressed in a timely manner.

9. How long does it typically take to repair OBDII code P130B?

- The repair time for OBDII code P130B can vary depending on the exact cause of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the problem.

10. Will resetting the OBDII code P130B make it go away permanently?

- Resetting the code may temporarily clear it, but if the underlying issue is not fixed, the code is likely to reappear. It is crucial to diagnose and address the root cause to prevent the code from coming back.