P0328 2001 Toyota Highlander Code - Knock Sensor 1 Circuit High Input
Quick Answer
The knock sensor is attached to the cylinder block. Common causes include Faulty knock sensor, Knock sensor circuit poor electrical connection, Knock sensor harness is open or shorted. 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
- P0328 2001 Toyota Highlander indicates Knock Sensor 1 Circuit High Input.
- Common causes
- Common causes include Faulty knock sensor, Knock sensor circuit poor electrical connection, Knock sensor harness is open or shorted.
- 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.
Code P0328 2001 Toyota Highlander Description
What are the Possible Causes of the DTC P0328 2001 Toyota Highlander?
- Faulty knock sensor
- Knock sensor circuit poor electrical connection
- Knock sensor harness is open or shorted
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0328 2001 Toyota Highlander?
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.
Code Tech Notes
You maybe also consider replacing the knock sensor short harness to avoid future problems.
If you have a V6 Toyota Highlander, it is recommended you replace both knock sensors and short harness to avoid re-doing the labor since it is alot of work, since it is located under the intake manifold.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0328 2001 Toyota Highlander 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 P0328 2001 Toyota Highlander code?
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Need Help with the Code?
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Frequently Asked Questions about P0328 2001 Toyota Highlander Code
1. What are the common symptoms of OBDII code P0328 in a 2001 Toyota Highlander?
- Common symptoms include engine knocking or pinging noises, reduced engine performance, and the illumination of the check engine light.
2. What does the OBDII code P0328 "Knock Sensor 1 Circuit High Input" mean for a 2001 Toyota Highlander?
- This code indicates that the engine control module (ECM) has detected a high voltage signal from the knock sensor 1 circuit.
3. What are the possible causes of OBDII code P0328 in a 2001 Toyota Highlander?
- Potential causes include a faulty knock sensor, damaged wiring or connectors in the knock sensor circuit, or a problem with the ECM.
4. How can I diagnose the issue causing OBDII code P0328 in my 2001 Toyota Highlander?
- Diagnosing this code typically involves testing the knock sensor, inspecting the wiring and connectors for damage, and checking the ECM for any faults.
5. Can I continue driving my 2001 Toyota Highlander with OBDII code P0328 present?
- It is not recommended to drive the vehicle with this code active, as it can lead to engine damage and reduced performance over time.
6. Is it possible to reset the OBDII code P0328 in a 2001 Toyota Highlander by disconnecting the battery?
- While disconnecting the battery may clear the code temporarily, it will likely return if the underlying issue causing the high input signal is not addressed.
7. How much does it typically cost to repair OBDII code P0328 in a 2001 Toyota Highlander?
- The cost of repair can vary depending on the exact cause of the code, but it may involve replacing the knock sensor, repairing wiring, or addressing ECM issues.
8. Are there any DIY repair tips for addressing OBDII code P0328 in a 2001 Toyota Highlander?
- DIYers may attempt to inspect the knock sensor and wiring themselves, but diagnosing and repairing electrical issues can be complex and may require professional help.
9. Can a faulty knock sensor cause other problems in a 2001 Toyota Highlander besides triggering OBDII code P0328?
- Yes, a faulty knock sensor can lead to poor fuel economy, engine misfires, and potentially even engine damage if not addressed promptly.
10. How long does it take to repair OBDII code P0328 in a 2001 Toyota Highlander at a professional mechanic or dealership?
- The repair time can vary based on the exact cause of the code, but it typically takes a few hours to diagnose and fix the issue using professional diagnostic equipment and tools.
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