A P0010 code means the engine computer found an open or short in the intake camshaft actuator circuit on Bank 1, the side of the engine with cylinder 1. The fault sits in the electrical path to the variable valve timing (VVT) solenoid, so wiring can cause it as easily as the part itself.
The check engine light is usually the first sign. Check the oil and the wiring first, since both are cheaper to test than replacing the solenoid.
What the P0010 Code Means
The P0010 code is the generic OBD-II code for the “A” Camshaft Position Actuator Circuit (Bank 1), set when the engine computer detects an open or short in the intake VVT solenoid circuit.
The engine computer, also called the powertrain control module (PCM), adjusts intake camshaft timing through an oil control valve, which is the VVT control solenoid. MechanicBase describes the trigger as a problem with one of the VVT solenoids. KBB says the code sets when the computer tries to adjust bank one intake timing and finds an electrical fault in the valve circuit or solenoid.
Bank 1 is the side of the engine with cylinder 1, and the intake camshaft opens the intake valves on that side. The exhaust-side version is P0013, which GM describes as the exhaust camshaft position actuator solenoid valve control circuit. Do not confuse a P0010 code with timing-performance codes, such as the P0011 code and the P0012 code, which describe cam timing rather than a broken circuit. Check the exact wording on your scan report.
Open Circuit or Short: What the ECM Sees
An open circuit is a break that stops current from reaching the solenoid, while a short is an unwanted connection that pulls the signal to ground or to power. The engine computer drives the solenoid with an electrical signal and watches that circuit for faults.
KBB describes the P0010 code as meaning the camshaft actuator is open or has shorted, so the code covers both extremes. An open can come from a cut wire, a pin that has backed out of its connector, or a coil that has failed internally. A short often comes from insulation rubbed through against metal, or a wire touching another circuit.
The code alone does not tell you which wire, pin or part failed. A resistance check at the solenoid and a close look at the harness are needed to tell an open from a short, and to find the spot where it happens.
Common Causes of a P0010 Code
A failed VVT solenoid is the most common cause of a P0010 code, according to KBB, followed by sludged oil and frayed wiring. KBB also lists crankshaft or camshaft sensor faults and engine operation outside normal timing limits. MechanicBase adds a malfunctioning PCM as a less common cause. The table ranks each cause with the first check to make.
| Cause | What points to it | First check |
|---|---|---|
| Failed VVT solenoid | Resistance off from the service manual value, or no response in a scan tool output test | Measure solenoid resistance against the service manual |
| Frayed wiring or bad connector | Code returns after clearing, or visible damage and corrosion at the plug | Inspect the harness and connector pins |
| Sludged or low oil | Low oil level, dirty oil, or sludge at the filler cap | Check the oil level and condition |
| Crankshaft or camshaft sensor fault | Other sensor codes stored alongside the P0010 code | Read related codes and freeze frame data |
| Malfunctioning PCM | All other checks pass and the fault remains | Last step, with professional testing |
Sludge deserves extra attention. KBB says low oil level or sludge can block oil flow to the actuator, so the oil check is cheap and worth doing before any part is ordered. Codes about crankshaft and camshaft timing correlation, such as the P0016 code, describe a separate fault and should be read on their own terms.
Symptoms and Whether You Can Keep Driving
A P0010 code usually turns on the check engine light, and KBB lists rough idle, lower fuel economy and weaker acceleration among the common symptoms. Its full list of symptoms is:
- Check engine light
- Decreased fuel economy
- Rough running or rough idling
- Reduced performance during acceleration
- Rattling or knocking from the engine
MechanicBase rates the P0010 code as Medium severity and advises having the system checked before major damage occurs. KBB goes further and discourages driving with any error code, noting that a lit check engine light will fail an emissions test. Treat a rattling or knocking engine as a reason to stop driving and call a shop.
Step-by-Step Electrical Diagnosis
Start with the related codes and freeze frame data, then check the oil, inspect the wiring, and test the solenoid last. The order below follows the diagnostic steps KBB lists, which put the cheap checks ahead of parts.
- Read all stored codes and the freeze frame data, and note any crankshaft or camshaft sensor codes.
- Check the engine oil level and condition, and look for sludge at the filler cap.
- Inspect the bank 1 VVT solenoid, its connector and the harness for frayed wire, corrosion or loose pins.
- Measure the resistance of the bank 1 intake VVT solenoid and compare it with the service manual. KBB gives no number, so the value must come from your vehicle’s manual.
- Clear the codes, drive the car through a full cycle, and rescan. A returning code means the circuit or the solenoid is still faulty.
KBB warns that replacing the actuator without cleaning it, or skipping the electrical circuit check, are common DIY mistakes. If the resistance and wiring check out but the code returns, take the car to a shop that can run a scan tool output test on the circuit.
Real Bulletins Show Where Open Circuits Come From
A 2021 Jeep bulletin shows that an open circuit can come from the grounding path rather than the solenoid. It lists the P0010 code as a Bank 1 camshaft position actuator circuit open on Wrangler (JL) and Gladiator (JT) 3.6L models built in mid-October 2020. The fix was to cut and splice an engine ground eyelet and tighten the ground bolt to 20 newton-meters (15 ft-lb), with 1.9 labor hours listed. The bulletin says it is technical information only, not repair authorization, so confirm the VIN with a dealer before acting on it. NHTSA bulletin 08-111-21
A 2016 GM special coverage bulletin covers the P0010 code on some 2013 Chevrolet Malibu and Cadillac ATS models with 2.0L turbo or 2.5L engines. GM says the code can set from an internal broken wire in the intake camshaft actuator solenoid, and it lists free replacement of that solenoid. Coverage runs 10 years or 120,000 miles from the in-service date, so for 2013 cars that window has likely closed. The VIN still decides eligibility. GM special coverage 15824
How Much a P0010 Repair Costs
As of 2026-11-06, the only cost ranges we could read come from MechanicBase, and that page does not show when its figures were set. The cost depends on the confirmed cause, so the diagnosis decides the bill. MechanicBase lists these ranges:
| Repair | Cost range listed by MechanicBase |
|---|---|
| Engine oil and filter change | $45 to $125 |
| Wiring or bad connection repair | $50 to $550 |
| VVT solenoid replacement | $300 to $650 |
| PCM update or replacement | $300 to $2,500 |
The oil and wiring checks cost the least and can rule out the solenoid. A PCM job sits at the top of the range and should come last, after the other causes are ruled out. If a shop points to the cam phaser instead of the solenoid, the cam phaser replacement cost guide covers that larger job. Ask the shop for a written quote, and check whether a bulletin or warranty covers the work before you pay.
Clearing the Code and Confirming the Fix
Clearing a P0010 code removes the stored code but repairs nothing, so confirm the fix with a rescan after a full drive cycle. A scan tool clears the code, but the engine computer sets it again if the fault is still present. Our guide on how to reset the check engine light covers the usual methods.
Record the freeze frame data before you clear anything. It shows the conditions when the code was set, and it helps a shop repeat the fault. After the repair, drive the car through a full cycle and rescan. If the code returns, the cause was not fixed, so go back to the wiring and resistance checks.
Frequently Asked Questions
Is a P0010 code serious?
MechanicBase rates the P0010 code as Medium severity, and KBB advises against driving with any error code. A lit check engine light will also fail an emissions test. Limit your driving, have the code checked soon, and stop if you hear rattling or knocking from the engine.
Can low oil cause a P0010 code?
Yes, according to KBB, which says sludge or a low oil level can block oil flow to the actuator. Check the oil level and condition before buying parts, since the check costs little and can rule out a common cause.
How is P0010 different from P0013?
The P0010 code covers the intake camshaft actuator circuit on Bank 1. GM describes P0013 as the exhaust camshaft position actuator solenoid valve control circuit, so the two codes point to different solenoids. Read the exact code on your scan report before ordering parts.
Does clearing the P0010 code fix the problem?
No. Clearing the code removes the stored fault and freeze frame, but the cause stays in place. Repair the wiring, solenoid or oil problem first, then clear the code and drive the car to confirm the repair held.
Can I replace the solenoid without testing it?
KBB warns that replacing the actuator without cleaning it, or skipping the electrical circuit check, are common DIY mistakes. Test the resistance and inspect the wiring first, so you do not buy a part the car does not need.
Does a P0010 code mean the timing chain has failed?
Not on its own. KBB lists the solenoid, sludge, sensors and wiring as causes, and timing outside normal limits is one possibility among them. Diagnose the circuit before you approve a timing job.
If your car is a 2013 Chevrolet Malibu or Cadillac ATS, check the VIN with a GM dealer for the coverage bulletin before you pay for solenoid work. For other vehicles, start with the oil and the wiring, since those checks cost the least.
