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What is code p2646 on 2014 chevy malibu?

The code P2646 in a Chevrolet Malibu typically indicates there is an issue with the arm actuator system, and that it is either stuck, or malfunctioning. The root cause of this could be due to the oil control valve, which can be found near the engine.

How do I fix error code P2646?

What repairs can fix the P2646 code?

  1. Replacing the ‘A’ rocker arm actuator.
  2. Repairing the wiring harness or connector to the actuator.
  3. Changing the oil and filter to the correct viscosity oil.
  4. Flush the engine passages of sludge from lack of oil changes.

What is a rocker arm actuator?

The rocker arm actuator is an oil pressure switch which controls the flow of oil to critical upper engine cylinder head components.

What is a P2646 code?

Diagnostic Trouble Code (DTC) P2646 code stands for “A” Rocker Arm Actuator System Performance/ Stuck Off (Bank 1).” It’s a generic OBD-II powertrain code supported by a variety of makes and models. VTEC is a variable valve timing system developed by Honda to improve your vehicle’s fuel efficiency.

What are common problems with 2014 Chevy Malibu?

Top 2014 Chevrolet Malibu Problems

  • Problems With Electric Power Steering System May Require Steering Column Replacement. …
  • No Start Due to Failed Passlock Sensor. …
  • The Fuel Gauge May Not Read Correctly and/or Check Engine Light With Code P0455/P0461. …
  • “No Start” Due to Ignition Switch Failure.

How much does it cost to fix a rocker arm actuator?

Because rocker arm repair is tedious work, it can be time intensive so hiring an auto mechanic or dealership to do the job is not cheap. Expect to pay anywhere from $500 to $1,500 (parts + labor) depending on the vehicle. A good chunk of the expense is for labor as it can take a long time to access the necessary parts.

What causes a rocker arm to come off?

The most likely cause for the loose rocker arm bolts in your engine is either inadequate tightening originally, or an effort to adjust the rocker arms at some point in the engine’s life. The only other possible explanation I can think of is some type of mechanical interference.

Where is the rocker arm located?

The rocker arms are located at the engine head, connecting the camshaft to the exhaust and intake valves.

What does a rocker arm control valve do?

In the context of an internal combustion engine, a rocker arm is a valvetrain component that typically transfers the motion of a pushrod to the corresponding intake/exhuast valve. Rocker arms in automobiles are typically made from stamped steel, or aluminum in higher-revving applications.

What is a rocker arm switch?

The Rocker arm oil pressure switch is used to verify the oil pressure in the Variable Valve Timing mechanism.

How much does it cost to replace a VTEC solenoid?

The average cost for a Honda Accord variable valve timing control solenoid replacement is between $198 and $256. Labor costs are estimated between $49 and $62 while parts are priced between $149 and $194. This range does not include taxes and fees, and does not factor in your specific model year or unique location.

What happens when oil pressure switch fails?

oil pressure gauge or warning light malfunctions: depending on how the device fails, a faulty oil pressure switch may cause the oil pressure warning light to be on all the time, or not function at all. a failed sender may cause the gauge to be pegged at high, or not function at all.

How do I fix error code P2647?

What repairs can fix the P2647 code?

  1. Adding or changing the engine oil.
  2. Replacing the timing belt or chain as well as other timing components.
  3. Replacing the oil control valve or other variable valve timing components.
  4. Repairing or replacing wiring or connectors that are associated with the variable valve timing system.

Do Chevy Malibus have a lot of problems?

Chevrolet Malibu Reliability Problems. Malibu owners have made 4,470 complaints over 25 model years. Using our PainRank™ system we’ve ranked it 33rd in overall reliability out of 40 Chevrolet models , with real engine and electrical concerns.

How many miles does a 2014 Chevy Malibu last?

Here is the short answer to how long the Chevrolet Malibu lasts: The Chevrolet Malibu has a service life of 200,000 – 250,000 miles on average providing it’s properly maintained.

What is the most common problem of a Chevy Malibu?

Here are some of the most frequently reported issues across its model years:

  • Loss of Engine Power. …
  • Failed Passlock Sensor. …
  • Transmission Failure. …
  • Turn Signal Switch Failure. …
  • Power Door Lock Problems. …
  • Headlight Issues. …
  • CD Player Not Working. …
  • Power Steering Malfunction.

Can you drive with a broken rocker arm?

Rocker arms that are loose or broken can cause the exhaust valves and intake valves to malfunction, and the cylinder associated with the faulty rocker arm will be disabled if it is loose or broken. As a result, your engine will not perform as well and you will not be able to drive the car safely and smoothly.

How do I know if my rocker arm is bad?

When you start the engine and you hear the clicking or ticking noises when you start the engine, you should check the rocker arm or its surrounding components visually check the rocker arm while engine is running and if you hear the noise, damaged rocker arm get stuck and doesn’t open and close the valves properly.

How do I know if my rocker arm is loose?

2 Signs Your Car Engine’s Rocker Arm Is Loose Or Broken

  1. Engine’s Performance Has Decreased Dramatically. One sign that your car’s engine has a loose or broken rocker arm is when the engine’s performance has dramatically decreased. …
  2. Ticking Sounds Are Constantly Heard While the Engine Is Running.

Can a rocker arm cause a misfire?

A bad coil, worn plug, or plugged injector are some of the more common causes of a misfire. The rocker arm is falling out of place in many 3.7 and 4.7 engines and this is very disturbing. A rocker arm out of place is a very severe misfire.

How tight do you tighten rocker arms?

When a valve rocker is at it’s loosest position. Tighten the nut until it’s hard to rotate the push rod between your finger and your thumb.

How do you loosen rocker arms?

When a valve rocker is at it’s loosest position. Tighten the nut until it’s hard to rotate the push rod between your finger and your thumb.

What does rocker arm noise sound like?

What Sound Does A Bad Rocker Arm Make? An engine rocker arm that is not functioning properly can cause clicking or ticking noises from the cylinder head. It can also cause misfires or a stalling engine, as well as a check engine light on the dashboard.

Can rocker arm cause knocking?

Engine Misfiring or Stalling

If your rocker arms are faulty, your engine will keep jerking at intervals as you drive. With time, when the rocker arms can’t function anymore, it will lead to engine knocking out.

Can I reuse rocker arms?

if reusing cam/lifters/pushrods/rockers put them back in the same location facing same direction as before and they will be good to reuse as is. If you are doing it, might as well drop it in with 0 miles on it.