Code P0020 is an OBD-II (On-Board Diagnostics) code that is generated when the Engine Control Unit (ECU) detects an issue with the camshaft position sensor circuit. The ECU monitors the position and speed of the camshaft sensor in order to ensure that the engine is running smoothly. In the event that the camshaft position sensor circuit fails, the ECU registers a code P0020 and generates a Malfunction Indicator Lamp (MIL) to alert the driver of the issue.

Causes of OBD-II Code P0020

There are several potential causes of a P0020 code. One common cause is a faulty camshaft position sensor, which can be caused by wear and tear or damage to the sensor itself. Other potential causes include wiring issues, a malfunctioning ECM, or a timing chain that has slipped out of place.

Regardless of the specific cause, a P0020 code signals that there is an issue with the camshaft position sensor circuit that needs to be resolved in order to ensure proper engine operation.

Solutions for OBD-II Code P0020

DTC P0020 is a generic diagnostic trouble code that indicates a fault in the camshaft position actuator circuit. To fix this issue, you can follow the following steps:

  1. Check for damaged wiring or connectors: Inspect the wiring harness and connections associated with the camshaft position actuator circuit to ensure there are no broken wires or rusty or corroded connectors.
  2. Inspect the camshaft position sensor: The sensor should be visually inspected for any damage or debris. Ensure that the sensor is clean and free from dirt debris.
  3. Replace the necessary components: If any of the components of the camshaft position actuator circuit are found to be faulty, they should be replaced properly.
  4. Replace the oil control valve: If the camshaft position actuator circuit is sound, it might be an issue with the oil control valve. Replacing the oil control valve should rectify the issue.
  5. Perform a system diagnosis: If any of the above steps don’t work, it may be necessary to diagnose the system using an OBD-II scanner. This will help you determine the exact issue and recommend further corrective actions.

Overall, to fix DTC P0020, it’s best to begin by inspecting the wiring harness, then the connections, then the camshaft position sensors themselves, followed by the oil control valve, and finally, performing a complete system diagnosis.

Codes Related to P0020

There are some codes that likely would have been shown along with the aforementioned code: P0010, P0011, P0012, P0021, P0022.


In general, a diagnostic fee can range from $50 to $150 or more. This fee covers the technician’s time to connect a scan tool or diagnostic equipment to retrieve the trouble code, perform additional tests, inspect relevant components, and interpret the data to identify the underlying issue.

Driving with a P0020 code is not recommended. The code indicates a problem with the camshaft position actuator circuit, which can affect the engine’s performance and potentially lead to further damage if not addressed.

You may also be interested in:

Block with installed cylinder head gasket

The Best Head Gasket Sealers – 2024 Review and Buyer’s Guide

Snow foam cannon for Karcher

The Best Foam Cannons For Hose or Pressure Washer

Impact Sockets Set

The Best Impact Sockets For Easy Unscrewing: Ultimate Buying Guide

Big electric fan heater in double-car garage

The Best Garage Heaters in 2024 (For Garages That Fit 1-4 Cars)

porsche brake caliper white

The Best Brake Calipers For High-Performance Cars and General-Purpose Ones

Air compressors for garage - different colors

Best Air Compressors For Home Garage Use in 2024 (Review)

We do an efforts to find, research and recommend the best products. So, we may receive commissions from purchases that you make after following the links in our product reviews.

Leave A Comment

Your email address will not be published. Required fields are marked *