Engine-CodesFord – P0035 Ford

P0035 Ford Code - Turbocharger Bypass Valve 'A' Control Circuit High

Quick Answer

The P0035 Ford diagnostic trouble code (DTC) refers to the Turbocharger Bypass Valve 'A' Control Circuit High. Common causes include Faulty turbocharger bypass valve, Wiring or connector issues in the control circuit, ECM (Engine Control Module) malfunction. 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
P0035 Ford indicates Turbocharger Bypass Valve 'A' Control Circuit High.
Common causes
Common causes include Faulty turbocharger bypass valve, Wiring or connector issues in the control circuit, ECM (Engine Control Module) malfunction.
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 Sep 08, 2024
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Code P0035 Ford Description

The P0035 Ford diagnostic trouble code (DTC) refers to the Turbocharger Bypass Valve 'A' Control Circuit High. This code indicates that there is a problem with the control circuit for the turbocharger bypass valve in the vehicle. The turbocharger bypass valve is responsible for controlling the amount of boost pressure that is allowed into the engine. When the control circuit is reading high, it means that there is an issue with the signal being sent to the valve, which can lead to a variety of performance problems.

OBDII Code P0035 Ford - Turbocharger Bypass Valve 'A' Control Circuit High
P0035 Ford Code - Turbocharger Bypass Valve 'A' Control Circuit High

Common Causes of P0035 Ford

  1. Faulty turbocharger bypass valve
  2. Wiring or connector issues in the control circuit
  3. ECM (Engine Control Module) malfunction
  4. Vacuum leaks in the turbocharger system
  5. Exhaust leaks near the turbocharger

Symptoms of P0035 Ford

  1. Reduced engine power
  2. Poor acceleration
  3. Decreased fuel efficiency
  4. Increased emissions
  5. Check Engine Light illuminated

How to Fix P0035 Ford

  1. Diagnose the issue using a scan tool to verify the P0035 code and identify the exact cause of the problem.
  2. Inspect the wiring and connectors in the turbocharger bypass valve control circuit for any damage or corrosion. Repair or replace as needed.
  3. Test the turbocharger bypass valve to ensure it is functioning correctly. Replace if faulty.
  4. Check for any vacuum or exhaust leaks in the turbocharger system and repair as necessary.
  5. Clear the fault code from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0035 Ford

The typical repair costs for addressing the P0035 Ford code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $150 to $400. Keep in mind that additional diagnostic time may be needed to pinpoint the exact cause of the problem, which can incur extra costs. It is recommended to contact local auto repair shops for more accurate estimates based on your vehicle make and model.

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Information for Specific Ford Models

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 P0035 Ford Code

1. What does the OBDII code P0035 mean on a Ford vehicle?

P0035 indicates that the turbocharger bypass valve 'A' control circuit is reading a voltage or signal that is too high, suggesting an electrical or mechanical issue with the bypass valve system.

2. What are the common symptoms of code P0035 in a Ford?

Symptoms may include reduced engine performance, turbo lag, poor acceleration, a check engine light, and in some cases, unusual noises from the turbocharger.

3. What causes the P0035 code to appear on a Ford?

Common causes include a faulty turbocharger bypass valve, damaged wiring or connectors in the bypass valve circuit, a malfunctioning turbocharger, or issues with the vehicle's powertrain control module (PCM).

4. Can I drive my Ford with the P0035 code?

While the vehicle may still be drivable, continuing to drive with this code can lead to reduced performance and potential damage to the turbocharger or engine. It's best to address the issue promptly.

5. How is the P0035 code diagnosed?

Diagnosis involves checking the wiring and connectors for damage, testing the bypass valve for proper operation, inspecting the turbocharger system, and using a scan tool to monitor live data and confirm the fault.

6. How do I fix the P0035 code on my Ford?

Repairs may include replacing the turbocharger bypass valve, repairing or replacing damaged wiring or connectors, or addressing any issues with the turbocharger itself.

7. How much does it cost to repair the P0035 code on a Ford?

Repair costs can vary depending on the exact issue but typically range from $100 to $500, depending on whether it involves replacing the bypass valve or repairing wiring.

8. Can a dirty air filter cause the P0035 code?

While a dirty air filter is unlikely to directly cause the P0035 code, restricted airflow can negatively affect the turbocharger system, potentially leading to related issues.

9. Will clearing the P0035 code with a scan tool fix the problem?

Clearing the code will turn off the check engine light temporarily, but it won't fix the underlying issue. The code is likely to return until the problem is resolved.

10. Is code P0035 specific to Ford vehicles?

No, P0035 is a generic OBDII code that can appear on any vehicle with a turbocharged engine, but the exact causes and repair procedures may vary by make and model.

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