P0021 Ford Code - 'A' Camshaft Position Timing Over-Advanced Bank 2
Quick Answer
The Variable Camshaft Timing (VCT) solenoid valve is an integral part of the VCT system. Common causes include Low or Dirty Engine Oil, Incorrect camshaft timing, Faulty Variable Camshaft Timing (VCT) Bank 2 Solenoid 1 (VCT21). 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
- P0021 Ford indicates 'A' Camshaft Position Timing Over-Advanced Bank 2.
- Common causes
- Common causes include Low or Dirty Engine Oil, Incorrect camshaft timing, Faulty Variable Camshaft Timing (VCT) Bank 2 Solenoid 1 (VCT21).
- 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 P0021 Ford Description
The PCM calculates and determines the desired camshaft position. It continually updates the VCT solenoid duty cycle until the desired position is achieved. A difference between the desired and actual camshaft position represents a position error in the PCM VCT control loop. The PCM disables the VCT and places the camshaft in a default position if a concern is detected. A related Diagnostic Trouble Code (DTC) also sets when the concern is detected.
When the VCT solenoid is energized, engine oil is allowed to flow to the VCT actuator assembly which advances or retards the camshaft timing. One half of the VCT actuator is coupled to the camshaft and the other half is connected to the timing chain. Oil chambers between the 2 halves couple the camshaft to the timing chain. When the flow of oil is shifted from one side of the chamber to the other, the differential change in oil pressure forces the camshaft to rotate in either an advance or retard position depending on the oil flow.
This DTC sets when the VCT position is over-advanced. This DTC sets when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position.
What are the Possible Causes of the DTC P0021 Ford?
- Low or Dirty Engine Oil
- Incorrect camshaft timing
- Faulty Variable Camshaft Timing (VCT) Bank 2 Solenoid 1 (VCT21)
- Faulty Camshaft Position (CMP) Bank 2 Sensor 1 (CMP21)
- Variable Camshaft Timing Bank 2 Solenoid 1 circuit is open or shorted
- Variable Camshaft Timing Bank 2 Solenoid 1 circuit poor electrical connection
- Camshaft Position Bank 2 Sensor 1 circuit is open or shorted
- Camshaft Position Bank 2 Sensor 1 circuit poor electrical connection
- Faulty Variable Camshaft Timing Phaser
How to Fix the DTC P0021 Ford?
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 P0021 Ford 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.
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Information for Specific Ford Models
- P0021 2015 Ford F150 — 'A' Camshaft Position Timing Over-Advanced Bank 2
- P0021 2016 Ford F150 — 'A' Camshaft Position Timing Over-Advanced Bank 2
- P0021 2017 Ford F150 — 'A' Camshaft Position Timing Over-Advanced Bank 2
- P0021 2018 Ford F150 — 'A' Camshaft Position Timing Over-Advanced Bank 2
- P0021 2019 Ford F150 — 'A' Camshaft Position Timing Over-Advanced Bank 2
- P0021 2020 Ford F150 — 'A' Camshaft Position Timing Over-Advanced Bank 2
- P0021 2006 Ford Fusion — Intake Camshaft Position Timing Over Advance Bank 2
- P0021 2007 Ford Fusion — Intake Camshaft Position Timing Over Advance Bank 2
- P0021 2008 Ford Fusion — Intake Camshaft Position Timing Over Advance Bank 2
- P0021 2009 Ford Fusion — Intake Camshaft Position Timing Over Advance Bank 2
- P0021 2010 Ford Fusion — Intake Camshaft Position Timing Over Advance Bank 2
- P0021 2011 Ford Fusion — Intake Camshaft Position Timing Over Advance Bank 2
- P0021 2012 Ford Fusion — Intake Camshaft Position Timing Over Advance Bank 2
Frequently Asked Questions about P0021 Ford Code
1. What are the common symptoms of OBDII code P0021 Ford 'A' Camshaft Position Timing Over-Advanced Bank 2?
- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and a reduction in overall engine performance.
2. What are the potential causes of OBDII code P0021 Ford 'A' Camshaft Position Timing Over-Advanced Bank 2?
- Potential causes include a faulty camshaft position sensor, issues with the variable valve timing (VVT) system, engine oil problems, or a timing chain/belt issue.
3. How can I diagnose OBDII code P0021 Ford 'A' Camshaft Position Timing Over-Advanced Bank 2?
- Diagnosis typically involves scanning the vehicle's onboard computer for the specific error code, inspecting the camshaft position sensor, checking the VVT system, and evaluating the engine oil condition.
4. What are the recommended repair tips for addressing OBDII code P0021 Ford 'A' Camshaft Position Timing Over-Advanced Bank 2?
- Repair tips may include replacing the camshaft position sensor, addressing any VVT system malfunctions, ensuring proper engine oil levels and quality, and inspecting the timing chain/belt for wear.
5. Can I continue driving with OBDII code P0021 Ford 'A' Camshaft Position Timing Over-Advanced Bank 2?
- It is not recommended to continue driving with this code as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.
6. How much does it typically cost to repair OBDII code P0021 Ford 'A' Camshaft Position Timing Over-Advanced Bank 2?
- The cost of repair can vary depending on the specific cause of the code, but it may range from $200 to $800 or more, including parts and labor.
7. What happens if OBDII code P0021 Ford 'A' Camshaft Position Timing Over-Advanced Bank 2 is ignored?
- Ignoring this code can result in poor engine performance, increased fuel consumption, potential damage to engine components, and ultimately engine failure if left unresolved.
8. Is OBDII code P0021 Ford 'A' Camshaft Position Timing Over-Advanced Bank 2 a common issue in Ford vehicles?
- Yes, this code is relatively common in Ford vehicles, especially those equipped with variable valve timing systems.
9. Can a DIY enthusiast fix OBDII code P0021 Ford 'A' Camshaft Position Timing Over-Advanced Bank 2?
- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code themselves by following repair guides and using the necessary equipment.
10. How long does it typically take to repair OBDII code P0021 Ford 'A' Camshaft Position Timing Over-Advanced Bank 2?
- The repair time can vary based on the specific cause of the code and the complexity of the repair, but it may take anywhere from a few hours to a full day to complete the necessary repairs.
Discuss the causes and fixes for P0021 Ford OBDII Code
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I'am working on a 2005 expedition diagnose trouble code p0021 and p0430 any idea as to where to start ...
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More than likely the problem is the Valve Control Timing (VCT) position solenoid. P0021 is for the Bank 2 or Left Side of the Engine.
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