P2652 OBD-II Trouble Code: B Rocker Arm Actuator System Stuck On Bank1

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2652 code

P2652 is a diagnostic trouble code (DTC) for "B Rocker Arm Actuator System Stuck On Bank1". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford $114.99 $20.0
Toyota $114.99 $20.0
BMW $124.99 $20.0
SCHEDULE P2652 DIAGNOSTIC Get a fair and transparent estimate upfront

P2652 code definition

B Rocker Arm Actuator System Stuck On Bank1

What the P2652 code means

The Engine control module (ECM) has a wide variety of jobs, but one of the most critical is to keep the supply of oil within mechanically safe ranges. The engine depends on oil to produce a frictionless environment for the engine components moving at extremely rapid speeds. Without oil, internal engine components, such as rocker arms, will overheat and may scrape against their mating surface, instead of sliding.

The ECM uses sensors such as a rocker arm actuator, or oil pressure switch, to regulate the flow of oil to the engine. If trouble code P2652 sets, it means the ECM has detected an abnormality regarding the feedback it is receiving from the 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. The rocker arm actuator is a unit consisting of oil passages governed by the ECM; passage operation will alternate depending on the driving conditions, and each particular passage will vary oil pressure to the cylinder head.

The ECM has a “blueprint” of the manufacturer’s required oil pressure for the vehicle, and it will try to keep the oil pressure within that range by operating the passages within the rocker arm actuator to increase or limit the oil flow to the cylinder head. The actuator will measure how much oil is flowing through it and report it to the ECM. The ECM will administer changes where it sees fit. If the rocker arm actuator is out of range and the ECM is unable to make the changes needed to bring the response from the actuator back to a desirable range, a code P2652 may set.

What causes the P2652 code?

  • Low or overfilled oil
  • Faulty rocker arm actuator
  • Incorrect oil type
  • Faulty ECM
  • Engine mechanical fault

What are the symptoms of the P2652 code?

  • Check Engine Light illumination
  • Audible tap or tick from engine
  • Vehicle may enter limp mode and limit speed to under 40 miles per hour
  • Faulty oil pressure sensor
  • Faulty oil pump

How does a mechanic diagnose the P2652 code?

  • Checks the oil pressure of the engine
  • Inspects the screens of the oil pressure sensor and rocker arm actuator
  • Inspects the quality and level of the engine oil
  • Inspects the wiring of the oil pressure sensor and rocker arm actuator for opens or shorts in the circuit (also tests with a multimeter)
  • Checks Technical Service Bulletins (TSB’s) - some vehicles do have a TSB related to the P2652 trouble code

Common mistakes when diagnosing the P2652 code

Many mechanics may misidentify the location of the rocker arm actuator at fault. Generally, there are two rocker arm actuators (A, B). It is important to use a proper diagram for your specific vehicle to distinguish the two actuators.

How serious is the P2652 code?

It is fairly serious because the rocker arm actuator controls the oil flow to critical upper engine components. The rocker arm actuator must be in working order for the engine to receive proper lubrication. Lack of lubrication is a common cause of engine failure.

What repairs can fix the P2652 code?

Additional comments for consideration regarding the P2652 code

Researching the TSB’s pertaining to your specific vehicle can greatly assist in a proper, correct, and expedited repair

Need help with a P2652 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

Check Engine Light
trouble codes
P2652

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P2652 code.

SCHEDULE P2652 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(7400)

Rating Summary
6879
249
58
41
173
6879
249
58
41
173
 at YourMechanic

David

13 years of experience
393 reviews
David
13 years of experience
Chevrolet Malibu L4-2.4L - Check Engine Light is on Inspection - Marietta, Georgia
He explained everything to me in detail on what I needed to know about my car. Definitely recommend him for getting the job done.
 at YourMechanic

Raymond

37 years of experience
402 reviews
Raymond
37 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Las Vegas, Nevada
Raymond did a great job however I was charged for two hours labor and he was only here less than 45 minutes. should I expect this on future appointments with your mechanic ?
 at YourMechanic

Shane

17 years of experience
217 reviews
Shane
17 years of experience
Volkswagen EuroVan V6-2.8L - Check Engine Light is on Inspection - Austin, Texas
Arrived on time. Explained the issues he found and how he will fix it. I have parts on order and will schedule an appointment to have Shane install the parts when they arrive.
 at YourMechanic

Kanstantsin

19 years of experience
51 reviews
Kanstantsin
19 years of experience
Ford F-150 V8-4.6L - Check Engine Light is on Inspection - Littleton, Colorado
Kanstantsin arrived early. Was very courteous and professional. Will highly recommend to anyone. Thank you Kanstantsin.


More related articles

P0274 OBD-II Trouble Code: Cylinder 5 Injector Circuit High
P0274 P0274 code definition P0274 is a trouble code that denotes an above average draw of current from the number five cylinder’s fuel injector. What the P0274 code means If you see this code, it means your vehicle’s engine cylinder...
P0552 OBD-II Trouble Code: Power Steering Pressure Sensor Circuit Low Input
P0552 means there is an issue with the power steering pressure sensor circuit often cause by failure of the steering pump or poor wiring/connection.
P0418 OBD-II Trouble Code: Secondary Air Injection System Relay A circuit Malfunction
P0418 indicates that a problem has occurred in the secondary air injection system which causes engine hesitation when accelerating and stalling.

Related questions

DPF light, traction and engine lights flashing, car has no pulling power, dense blue/black smoke on each start.
Based on the information you provided, it is possible that a failed seal in the turbo is allowing engine oil into the intake. The result would be increases carbon buildup on your DPF (Diesel Particulate Filter). Usually a flashing Check...
I have problem ( Engine power Reduced ), Code 1682 ignition 1 switch circuit 2
The P1682 code means that there is a difference in voltage between the ignition switch circuit 1 and circuit 2. There are a few things that can cause this - including a fault with the ignition switch (https://www.yourmechanic.com/services/ignition-switch-replacement) itself or...
Need to know if I should replace my turbo or not
Hi, thanks for writing in. The turbo system is comprised of several different components. Without knowing the exact trouble code, it would be hard to guess at what is going on. There could be a bad sensor, a leaking intake...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com