AutoCodes – Generic – P130A

P130A Code - Knock Sensor 3 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: P130A indicates Knock Sensor 3 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 8,846

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 Aug 13, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P130A 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 P130A - Knock Sensor 3 Circuit - AutoCodes.com — P130A Code - Knock Sensor 3 Circuit

What does this mean?

What are the Possible Causes of the DTC P130A?

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

How to Fix the DTC P130A?

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 P130A 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 P130A code?

Need more information on how to fix the P130A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P130A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P130A Audi — Cylinder Disabling
P130A BMW — Camshaft Sensor Exhaust Space Loss
P130A Ford — Knock Sensor 3 Circuit
P130A MINI — Camshaft Sensor Exhaust Space Loss
P130A Volkswagen — Cylinder Disabling

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 P130A Code

1. What are the common symptoms of OBDII code P130A (Knock Sensor 3 Circuit)?

- Common symptoms include engine knocking or pinging noises, reduced engine performance, and illuminated Check Engine Light.

2. What are the possible causes of OBDII code P130A?

- Possible causes include a faulty knock sensor, wiring issues in the knock sensor circuit, engine mechanical problems, or a faulty engine control module.

3. How can I diagnose the OBDII code P130A?

- Diagnosing the code involves using a scan tool to read the code and then testing the knock sensor, inspecting the wiring for damage, and checking for any mechanical issues causing engine knock.

4. Can I drive my vehicle with OBDII code P130A?

- It is not recommended to drive the vehicle with this code, as it can lead to decreased engine performance and potential damage if left unresolved.

5. How do I repair OBDII code P130A?

- Repairing the code may involve replacing the faulty knock sensor, repairing any damaged wiring, addressing any engine mechanical issues, or reprogramming the engine control module.

6. Can a DIY enthusiast fix OBDII code P130A at home?

- While some DIY enthusiasts may have the skills to address this code, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.

7. How much does it cost to repair OBDII code P130A?

- The cost of repair can vary depending on the specific cause of the code, but it may range from $150 to $500, including parts and labor.

8. Is OBDII code P130A a common issue in certain vehicle makes and models?

- This code can occur in various vehicle makes and models, especially in older vehicles or those with high mileage, due to wear and tear on the knock sensor and related components.

9. Can a faulty knock sensor affect fuel economy?

- Yes, a faulty knock sensor can lead to decreased fuel economy since it affects the engine's timing and performance, causing it to run less efficiently.

10. How often should the knock sensor be inspected to prevent OBDII code P130A?

- It is recommended to have the knock sensor inspected during routine maintenance checks or whenever engine performance issues are noticed to prevent the occurrence of OBDII code P130A.