Did you know that nearly 30% of check engine light issues are related to variable valve timing systems? If you’ve encountered the P0013 code with your vehicle, you’re dealing with a specific problem in the exhaust camshaft position actuator circuit on Bank 1.
While this might sound complex, it’s a relatively common issue that can drastically impact your engine’s performance and fuel efficiency. You’ll want to understand the implications of this code, as ignoring it could lead to more severe engine problems and costly repairs.
Let’s explore what’s really happening under the hood and what you can do about it.
What Does Code P0013 Mean?
Diagnostic trouble code (DTC) P0013 stands for “Camshaft Position Actuator Circuit/Open (Bank 1).” This code is stored when your vehicle’s computer detects an electrical problem with the exhaust camshaft position actuator solenoid on Bank 1.
P0013 specifically points to issues within the circuit that controls the timing of your engine’s exhaust camshaft on the Bank 1 side of the engine. When this code appears, your vehicle’s computer has detected that the exhaust camshaft position actuator isn’t responding correctly to commands or drawing incorrect amounts of current. The powertrain control module (PCM) sends voltage out on one side of the circuit and looks for it to return on the opposite side. An open circuit or a shorted circuit will trigger the code.
A “performance fault” code is set when the PCM doesn’t see a problem with the circuit but detects that the requested change doesn’t happen when commanded.
The Bank 1 designation refers to the side of the engine containing cylinder #1, which is typically at the front of the engine in transverse-mounted configurations. The specific location helps you or your mechanic pinpoint exactly which actuator circuit is experiencing problems, making diagnostic work more efficient and targeted.
What Causes Code P0013?
The intricate network of components that manage your vehicle's camshaft timing can fail in critical ways, potentially triggering the P0013 diagnostic code. Identifying these potential points of failure is key to addressing the underlying mechanical or electrical issues.
- Bad oil control valve
- VVT solenoid control circuit problems
- PCM problems
Bad Oil Control Valve
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The oil control valve (OCV), which regulates oil flow to the exhaust “B” camshaft position actuator circuit (Bank 1), can malfunction due to electrical issues. When this happens, your engine’s variable valve timing system won’t function properly, leading to performance issues and triggering the check engine light.
VVT Solenoid Control Circuit Problems
These often stem from electrical connectivity issues between the engine control module (ECM) and the variable valve timing solenoid. You’ll typically find these problems manifest as open circuits, short circuits, or high resistance in the cabling that connects these components.
Issues with the PCM
PCM-related issues causing code P0013 typically originate from three main things: corrupted software, faulty internal circuitry, or compromised voltage outputs. When your PCM experiences these problems, it can’t properly control the exhaust camshaft position actuator, leading to timing and performance issues in your engine.
What Are the Symptoms of Code P0013?
When a P0013 code emerges, your vehicle communicates a specific set of performance problems that reflect underlying camshaft actuator malfunctions. Recognizing these warning signs can help you diagnose and address potential engine damage before more serious issues develop.
The caveat is that if the camshaft remains at its base setting, the engine will run as it would if it didn’t have variable valve timing (VVT), but the PCM will see that as a problem even though the symptoms may be minimal. Here are a few of the symptoms:
- Ignition/misfire issues
- Poor mileage
- Rough running
Ignition/Misfire Issues
Your engine’s variable valve timing system relies heavily on proper camshaft position actuator function. When it fails such that the camshaft is unable to return to base timing on one bank while the other bank operates normally, there may be changes in how your vehicle starts and runs, which you may or may not notice.
If the negative side of the circuit is shorted to ground, the actuator will fully advance the cam timing on that shaft and hold it there.
Poor Mileage
A noticeable drop in fuel economy often signals the presence of a P0013 code, as improper camshaft timing directly impacts your engine’s combustion efficiency. When your exhaust camshaft actuator isn’t functioning correctly, the engine can’t optimize valve timing, leading to increased fuel consumption.
Rough Running
When your exhaust camshaft position actuator isn’t functioning correctly, you’ll experience significant drivability issues as your engine struggles to maintain proper valve timing. The rough running often becomes more pronounced during acceleration or when you’re attempting to maintain steady highway speeds.
How to Diagnose Code P0013
Diagnosing code P0013 requires a systematic approach to identify the root cause of the exhaust camshaft position actuator circuit malfunction.
Check the Engine Oil Level/Condition
While oil level and quality are important, remember that this code points to an electrical issue with the solenoid, which won’t have anything to do with the quality of the oil.
Nonetheless, low oil level or contaminated oil can prevent the camshaft position actuator from functioning properly, potentially causing timing system failures.
Inspect the Electrical Connections to the Camshaft Position Actuator Solenoid
Look for loose, corroded, or damaged wiring. Using a multimeter, test the solenoid’s resistance—it should match the manufacturer’s specifications.
Check the Power Supply Voltage to the Solenoid
Do this when the ignition is in the “on” position. If voltage readings are incorrect, there may be an issue with the wiring loom or PCM.
Clear the Code
Use an OBD-II scanner to clear the P0013 code and test drive the vehicle to see if the code returns. If it does, use a diagnostic scanner that can monitor real-time camshaft position actuator data. Compare the commanded position versus actual position values. If there’s a significant discrepancy, you’re likely dealing with a faulty actuator solenoid that needs replacement.
How to Fix Code P0013
You’ll need to address the specific issue identified during diagnosis, whether it’s a faulty actuator solenoid, contaminated oil, or electrical problems. If you’re not accustomed to working on electrical wiring, you might want to hire a professional.
Consult Your Vehicle’s Service Manual
Review the manufacturer's service manual to understand the specific diagnostic procedures, specifications, and torque requirements for your vehicle's camshaft position actuator system.
Replace the Camshaft Position Actuator Solenoid
If electrical testing reveals resistance values outside manufacturer specifications, replace the camshaft position actuator solenoid to restore proper functionality.
Perform an Oil Change
Perform an oil change using the manufacturer-recommended oil grade just to ensure proper lubrication and hydraulic performance. But again, oil quality has nothing to do with this particular code.
Repair Electrical Connections
Carefully examine and repair any damaged wiring, connectors, or conduits in the actuator circuit to eliminate potential electrical interference.
Update the ECM
Check for and install any available technical service bulletin (TSB) updates for the engine control module (ECM) software that might resolve the P0013 code issues.
Once you’ve completed the necessary repairs, clear the code using an OBD-II scanner and test drive the vehicle to verify the success of the fix. Monitor the engine performance and check for any warning lights.
If you’re not comfortable performing these repairs, it’s best to have a certified mechanic complete the work to properly resolve the P0013 code.
Other Codes Related to P0013
P0020
The P0020 code shares similar characteristics with P0013, as both relate to camshaft position actuator circuits. However, P0020 specifically indicates issues with Bank 2’s intake camshaft position actuator.
Voltage irregularities in the Bank 2 intake actuator circuit can trigger both P0013 and P0020 simultaneously, as well as oil contamination affecting multiple actuators. Wiring conduit damage near the intake actuator on Bank 2 commonly causes P0020.
P2088
P2088 specifically identifies a “B” Camshaft Position Actuator Control Circuit High (Bank 1) condition, making it closely linked to P0013. When your vehicle’s PCM detects voltage in the control circuit that’s higher than the manufacturer’s specifications, it’ll trigger this code, indicating an electrical issue rather than a mechanical failure.
P0014
Similar to P0013, the P0014 code signals a “B” Camshaft Position—Timing Over-Advanced or System Performance (Bank 1) condition. This trouble code specifically indicates that your engine’s exhaust camshaft timing has exceeded the ECU’s specified parameters.
P0010
This code specifically points to an issue with the intake camshaft position actuator system on Bank 1, making it a close relative to P0013’s exhaust-side concerns. You’ll find that P0010 shares several common triggers with P0013, including solenoid malfunction, wiring issues, and oil contamination problems.
FAQ
Can I drive my car with a P0013 code?
Driving with a P0013 code isn’t recommended for extended periods, though the vehicle may still operate in the short term. The code indicates an issue that can affect engine performance, fuel efficiency, and emission control. If you must drive your vehicle, limit your trips to essential journeys and schedule repairs as soon as possible. The underlying issue could worsen over time, potentially leading to more expensive repairs or engine damage.
How much does it cost to fix code P0013?
The repair cost for a P0013 code typically ranges from $200 to $900, depending on the specific cause and vehicle make/model. The replacement of a faulty camshaft position actuator solenoid typically costs $40 to $400 for parts, plus $100 to $200 for labor.