P2645 Chevy Malibu 2015 (2024)

FAQs

How to fix P2646 code chevy malibu? ›

A technician will usually replace the “A” rocker arm actuator and repair the wiring harness or connectors leading to the actuator to inspect and repair the problem. They may also change the oil and filter to correct the oil viscosity and flush the engine passages of sludge if needed.

The Rocker Arm Control Solenoid supplies hydraulic pressure to the Variable Timing mechanism. This allows the Variable Timing System to adjust valve timing as needed. When the engine's control module (PCM) does not see the correct voltage signal back from the Rocker Arm Control Solenoid, the PCM will set code P2645.

A P2646 code is an OBD code for the Engine Control Module (ECM) detecting that the “A” rocker arm actuator control circuit for bank 1 has a performance issue or is stuck in the off position.

You can try to reset this by inserting your key into the ignition and turning it to the on position but not starting the engine. Let the key sit for 10 minutes or until the warning clears, and then shut off the ignition for 30 seconds. You will need to do this 2 more times to complete the process.

It's dangerous to drive with a bad rocker arm, so don't think twice about replacing it. Driving with a failing rocker arm can also do some serious damage to the engine.

In most cases, fixing the P2646 error code is not going to be extremely expensive. RepairPal estimates the cost to replace a variable valve timing control solenoid for a Honda Accord to be between $180 and $290. If you find the oil control valve screen is clogged, a replacement will cost around $10.

The rocker arm is mounted in the cylinder head on the rocker arm shaft. This part transfers the force from the camshaft to the valve in order to open it. The rocker arm is operated by a push rod in an engine block with underlying camshafts or directly by the camshaft in the case of an engine with overhead camshafts.

Rocker arm damage can manifest in various ways. Common signs include engine misfires, ticking or knocking noises, and decreased engine performance. If you observe any of these symptoms, it is advisable to have your rocker arms inspected by a professional mechanic.

Diagnostic Trouble Code (DTC) P2112 stands for “Throttle Actuator Control System Stuck Closed.” It is one of the codes related to your vehicle's throttle actuator control system. This code indicates that your PCM has detected that your throttle body plate is stuck in the closed position.

What is a rocker switch actuator? ›

So one side of the rocker switch is raised while the other side is depressed, much like a seesaw or rocking horse. It consists of a rectangular or square-shaped body with a hinged actuator (the “rocker”) that pivots around a central axis.

Common signs include the car not starting, a flashing security light on your dashboard, or a lack of response when you turn the key. Also, check if you have inadvertently activated the system or if the battery in your key fob is dead.

Put the key in the ignition and rotate forward two clicks to the “On” position that makes the dashboard light up, but don't try starting the car. Leave the key there for 15 minutes; it doesn't always take that long, but it can. After that time, check to see if the anti-theft light has gone out, if one was lit up.

A vehicle that won't start, won't spin the starter, or will start and immediately die is one of the most common symptoms of a problem with the vehicle's anti-theft system, and this problem can be a bit complicated to resolve.

Since low oil pressure is one of the potential causes of P2646, the real fix is new engine. However, there are many who are not yet willing to give up on an engine, and have decided to compensate for the low oil pressure by using a higher weight oil, such as 5w-30 or 5w-40.

Sometimes repairing a P0449 error code can be as simple as securing or replacing a damaged or faulty gas cap. A loose gas cap is the most common cause of the appearance of code P0449. However, if the code persists after securing/replacing your gas cap, do not try to repair the problem yourself.