Engine-CodesGeneric – P0699

P0699 Code - Sensor Reference Voltage 'C' Circuit High

Quick Answer

The P0699 diagnostic trouble code (DTC) refers to a Sensor Reference Voltage 'C' Circuit High. Common causes include Faulty sensor, Wiring or connection issues in the sensor reference voltage circuit, Corroded or damaged connectors. 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
P0699 indicates Sensor Reference Voltage 'C' Circuit High.
Common causes
Common causes include Faulty sensor, Wiring or connection issues in the sensor reference voltage circuit, Corroded or damaged connectors.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P0699 Description

The P0699 diagnostic trouble code (DTC) refers to a Sensor Reference Voltage 'C' Circuit High. This code indicates that the sensor reference voltage circuit 'C' is reading a voltage that is higher than the specified range. In modern vehicles, sensor reference voltage is used to provide power to various sensors in the engine and other systems. When this circuit reads a voltage that is too high, it can cause issues with sensor readings and affect the vehicle's performance.

OBDII Code P0699 - Sensor Reference Voltage 'C' Circuit High
P0699 Code - Sensor Reference Voltage 'C' Circuit High

Common Causes of P0699

  1. Faulty sensor
  2. Wiring or connection issues in the sensor reference voltage circuit
  3. Corroded or damaged connectors
  4. Issues with the powertrain control module (PCM)
  5. Short circuit in the sensor reference voltage circuit

Symptoms of P0699

  1. Check engine light illuminated
  2. Engine running rough or stalling
  3. Poor fuel efficiency
  4. Inaccurate sensor readings
  5. Reduced engine performance

How to Fix P0699

  1. Use a scan tool to verify the P0699 code and identify the specific sensor causing the issue.
  2. Inspect the sensor reference voltage circuit for any wiring or connection issues, repairing or replacing damaged components as needed.
  3. Check for corrosion or damage in the connectors and clean or replace them if necessary.
  4. Test the sensor to determine if it is faulty and replace it if needed.
  5. Clear the code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0699

The cost of repairing a Sensor Reference Voltage 'C' Circuit High issue can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the cost for parts and labor for this type of repair can range from $100 to $300. However, it's important to keep in mind that labor rates and parts prices can vary based on location, vehicle make and model, and the repair shop. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate for your specific situation.

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Code P0699 Information for Specific Makes

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.

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