AutoCodesToyota – P0340 1999 Toyota Corolla

P0340 1999 Toyota Corolla Code - Camshaft Position Sensor Circuit Malfunction

Quick Answer

The Camshaft Position Sensor (G Signal) consist of a signal plate and pickup coil. Common causes include Faulty Camshaft Position Sensor into the distributor, Camshaft Position Sensor harness is open or shorted, Camshaft Position 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
P0340 1999 Toyota Corolla indicates Camshaft Position Sensor Circuit Malfunction.
Common causes
Common causes include Faulty Camshaft Position Sensor into the distributor, Camshaft Position Sensor harness is open or shorted, Camshaft Position 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 9,338
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 16, 2019
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Code P0340 1999 Toyota Corolla Description

The Camshaft Position Sensor (G Signal) consist of a signal plate and pickup coil.
The G signal plate had one tooth on its outer circumference and is built into the distributor. When the camshaft rotate, the protrusion on the signal plate and the air gap on the pickup coil change, causing fluctuations in the magnetic field and generating an electromotive force in the pickup coil.
OBDII Code P0340 1999 Toyota Corolla - Camshaft Position Sensor Circuit Malfunction - AutoCodes.com
P0340 1999 Toyota Corolla Code - Camshaft Position Sensor Circuit Malfunction

What are the Possible Causes of the DTC P0340 1999 Toyota Corolla?

  • Faulty Camshaft Position Sensor into the distributor
  • Camshaft Position Sensor harness is open or shorted
  • Camshaft Position Sensor circuit poor electrical connection

How to Fix the DTC P0340 1999 Toyota Corolla?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0340 1999 Toyota Corolla 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 P0340 1999 Toyota Corolla code?

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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 P0340 1999 Toyota Corolla Code

1. What are the common symptoms of OBDII code P0340 in a 1999 Toyota Corolla?

The common symptoms of OBDII code P0340 in a 1999 Toyota Corolla include rough idling, engine misfires, difficulty starting the vehicle, and a decrease in fuel efficiency.

2. What is the possible cause of OBDII code P0340 in a 1999 Toyota Corolla?

The most common cause of OBDII code P0340 in a 1999 Toyota Corolla is a malfunctioning camshaft position sensor or a faulty camshaft position sensor circuit.

3. How can I diagnose the issue related to OBDII code P0340 in my 1999 Toyota Corolla?

To diagnose the issue related to OBDII code P0340 in a 1999 Toyota Corolla, you can use an OBDII scanner to read the code, visually inspect the camshaft position sensor and its wiring, and perform a continuity test on the sensor circuit.

4. Can I still drive my 1999 Toyota Corolla with OBDII code P0340?

It is not recommended to drive your 1999 Toyota Corolla with OBDII code P0340, as it can lead to further engine damage and potential safety risks. It's best to address the issue promptly.

5. How can I repair OBDII code P0340 in my 1999 Toyota Corolla?

To repair OBDII code P0340 in a 1999 Toyota Corolla, you may need to replace the camshaft position sensor, repair or replace damaged wiring, or reset the fault code using an OBDII scanner after fixing the underlying issue.

6. Can a dirty camshaft position sensor cause OBDII code P0340 in a 1999 Toyota Corolla?

Yes, a dirty or contaminated camshaft position sensor can cause OBDII code P0340 in a 1999 Toyota Corolla, as it may not be able to function properly and send accurate signals to the engine control module.

7. Is it necessary to replace the camshaft position sensor to resolve OBDII code P0340 in a 1999 Toyota Corolla?

In most cases, replacing the camshaft position sensor is the most effective way to resolve OBDII code P0340 in a 1999 Toyota Corolla. However, it's important to diagnose the issue accurately before proceeding with the replacement.

8. How much does it typically cost to repair OBDII code P0340 in a 1999 Toyota Corolla?

The cost to repair OBDII code P0340 in a 1999 Toyota Corolla can vary depending on the cause of the issue, labor rates in your area, and whether you choose to replace the sensor yourself or have a professional mechanic do the work. Expect costs for parts and labor to range from $100 to $300.

9. Can a faulty camshaft position sensor lead to other OBDII codes besides P0340 in a 1999 Toyota Corolla?

Yes, a faulty camshaft position sensor can potentially trigger other OBDII codes in a 1999 Toyota Corolla, such as P0341 (Camshaft Position Sensor Circuit Range/Performance) or P0342 (Camshaft Position Sensor Circuit Low Input).

10. How often should the camshaft position sensor be replaced in a 1999 Toyota Corolla to prevent OBDII code P0340 from recurring?

The camshaft position sensor in a 1999 Toyota Corolla typically does not require regular replacement unless it fails or malfunctions. However, it's essential to follow the manufacturer's recommended maintenance schedule and address any issues promptly to prevent OBDII code P0340 from recurring.

Discuss the causes and fixes for P0340 1999 Toyota Corolla OBDII Code

  • Yo compré un corolla 99 y el motor es 2002 el carro no tiene el conector Cran shaft q devo a ser

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