Error Code P0020: What It Means & What To Do?

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Is your engine stalling and facing problems when cold starting? Are you experiencing decreased fuel economy as well as low power from the car engines? All these must be the indication of OBC Code P0020 error.

OBD-II Code P0020 is defined as a "A" Camshaft Position Actuator Circuit/Open

A P0020 code refers to the VVT (variable valve timing) or VCT (variable camshaft timing) components and the car's PCM (powertrain control module) or ECM (engine control module). VVT is a technology used in the engine to allow it to get greater power or efficiency at different running points. That consists of an oil control valve (OCV), also called a solenoid valve and other components.

Basically, the check engine light and associated P0020 trouble code means that the voltage in the circuit has fallen below a set limit for a specific amount of time (varies by make/model/engine). Bank 2 is the side of the engine that doesn't contain cylinder #1.

What causes this problem with the "A" Camshaft Position Actuator Circuit?

• The can be chances that the ECM has commanded the OCV to less than 80% duty cycle and output is 100%
• The ECM has commanded the OCV up to 70% and output is less than 3%
• The OCV or wiring to the bank 1 exhaust camshaft can get shorted out
• The OCV may have an open circuit or the wiring may be open

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2. Auto Switches & Sensors - P0020 code does not really end up spoiling your oil control valve, but it might also accompany few auto switches & sensors issues. We have best auto switches & sensors issues related parts with us
3. Timing Sensor - Do you remember when was the last time you got your car timing sensor checked up? A damaged timing sensor can cause a lot of issues like displaying P0020 code.
4. Wiring Connectors - Wiring Connectors is an important car part which should never be neglected. May be there is some fault in it due to which P0020 code may start flashing.
5. Powertrain Control Module - P0020 error code also relates to problems with the powertrain control module. If the PCM is damaged it needs replacement or reprogramming. Find all the Powertrain related parts with us.
6. Diagnostic Tool - In order to detect the error, one needs high grade diagnostic tools. Visit us today to buy quality tools and equipment.

Willing to know some common symptoms of OBD Trouble Code P0020? Your wish is our demand. Have a look at them below:

Common Symptoms

• The check engine light can start appearing
• The engine can have a hard start condition if OCV is shorted
• There would be a decrease in the fuel mileage if the OCV is shorted or open
• The engine may run roughly, hesitate or stall depending on if it has shorted or if it has an open OCV circuit

• Clear the fault codes, freeze the existing codes and test the system to verify the code
• Check the wiring to the intake camshaft oil control valve for bank 2 and replace/repair
• Examine camshaft oil control valve for bank 2 intake camshaft
• Check the ECM for faults and replace if faulty or in need of reprogramming

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• Monitor crankshaft and camshaft positions using electromagnetic sensors
• A proper diagnosis should begin with making sure that all engine timing indicators are properly aligned. After that, test belt or chain deflection using manufacturer’s specifications
• VVT or VCT solenoids and circuitry is to be tested if timing components prove to be properly aligned and in good working order
• Check for electrical wiring and connectors as they are more prone to fail than sensors, especially where oil or other corrosive fluids are present
• An OBD-II scanner (or code reader), a digital volt/ohmmeter, and an oscilloscope can be used to diagnose this error
• Repair or replace damaged, disconnected, shorted, or corroded wiring, connectors, and components as necessary
• Always retest the system after repairs are completed to ensure success. If all system wiring, connectors, and components (Including fuses) appear to be in normal working order, connect the scanner (or code reader) to the diagnostic connector and record all stored codes and freeze frame data.

Common Mistakes When Diagnosing the P0020 Code

Do a visual inspection for common problems like checking to see if electrical connectors are connected properly. Check engine oil for the proper viscosity and as per configuration. Verify that failure codes are present before attempting repairs using scan tools. Always follow the manufacturer's procedures to prevent replacing good components or misdiagnosing the trouble code.