P0027 OBD Error Code: Problem & Solutions

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This code can be defined as “Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 1) and the “Bank 1” here denotes the side of the engine which has cylinder 1 on engines with two-cylinder heads.

If any sort of defect in the electro hydraulic control system of the Variable valve timing is detected by the Powertrain Control Module, then the P0027 fault code would start triggering up. The parameter which sets this code is a variation in the voltage that exceeds 10% of the reference voltage for the exhaust camshaft actuator.

What causes this problem with the Exhaust Valve Control Solenoid Circuit Range/Performance?

• The exhaust valve solenoid is activated by the ECM without change to the different lift position
• The exhaust valve lift solenoid would have an open or short circuit and due to this the valve lift would not change
• The wiring or connections to the exhaust valve lift solenoid can get damaged resulting in short or open circuit
• There can be some defects in the ECM

1. Valve Control Solenoid - Are your valve control solenoid damaged or broken? Don’t worry as we have solutions for all your problems.
2. Variable Valve Timing - Did your mechanic just found out that there is some fault in the variable valve timing? Buy top notch variable valve timing from us at economical prices.
3. Powertrain Control Module - Everything is fine with the engine control module and still OBD code P0027 flashing? Then there is definitely some fault with the powertrain control module. Get it checked and replace if needed.
4. Engine Control Module - Is your timing belt perfectly correct, but still seeing P0027 code? Then there is definitely some issue with the engine control module.

We care for our customers and that’s why we can totally understand your problem. That’s the reason why we have listed out some major symptoms behind the flashing up of OBD Code P0027. They are mentioned here as follows:

Common Symptoms

• There can be lack of power in the engine and it all depends on valve lift failed positions
• The engine can start hesitating or stalling on acceleration
• The engine will run erratic if the exhaust valves failed in the wrong lift position that is normal
• The check engine light may start illuminating

• The fault codes should be cleared up and a road test should be performed
• The exhaust valve lift solenoid should be replaced
• The wiring or connection to the exhaust lift solenoid should be repaired or replaced
• You can always repair the ECM connector or replace it

However, if you face any of these issues then you can have a look at our wide range of auto parts. We have stocked a wide range of best priced replacement parts, ECM/PCM parts, timing chain and a lot more to help you out in fixing your car.

• A visual check of the wire harness should be performed and connections for chafing or bad connections
• If you want to verify if the code returns, then you can clears all of the engine codes
• The test control solenoid to diagnose the valve train lift operation should be utilized
• The lift control solenoid for a short or open circuit should be checked and then you can replace the solenoid if it fails the test
• You can follow the manufacturer's specific pinpoint tests for further diagnosis of the wiring or ECM 

Common Mistakes When Diagnosing the P0027 Code

• The code should be cleared up and retest system to verify the failure in the variable valve lift system
• The special tools that are necessary for proper testing should be utilized
• If you want to isolate the failure on the system, then you must follow the pinpoint test, step by step
• The parts which are directed by the pinpoint and visual test procedure should only be replaced