P0077 - OBD Trouble Code

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Are you facing some issues with your variable valve timing solenoid? Is there any sort of defect in the wiring harness? Or is powertrain control module causing some issues? If the answer to all these questions is a YES, then your vehicle is definitely facing intake valve control solenoid circuit high issue or we can also say that it has OBD P0077 error.

The P0077 is a fault code which would start triggering up if there is some issue with the Bank 1 intake valve control circuit. This code appears when the engine control module has tried to control the intake valve solenoid and has found high readings in the circuit. The check engine light would start illuminating by the ECM until the sensor reads normal range of values.

What causes this problem with the Camshaft Intake Valve Control Solenoid Circuit High (Bank 1)?

• The control solenoid may have open circuit
• The issue of short to power
• There can be some faults in the engine control module

1. Variable Valve Timing Control Solenoid - OBD Error Code P0077 can simply be due to faulty Variable Valve Timing Control Solenoid. Replace old and damage components now!
2. Engine Wiring Harness - Did your mechanic just found out that there is some fault in the Engine Wiring Harness? Buy top notch Wiring Harness parts from us at economical prices.
3. Powertrain Control Module - P0077 error code also relates to problems with the Powertrain Control Module. Find all the PCM related parts with us.
4. Diagnostic Tools - Willing to buy a new diagnostic tool? Don’t Worry! Visit us and solve your problem.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0077 here:

Common Symptoms

• The engine control module may start triggering the check engine light to be displayed on the dashboard after the out of range sensor reading is found
• The car acceleration may start suffering
• You may start noticing a decline in fuel economy

• The variable valve timing control solenoid should be replaced
• The wiring harness/connectors to the control solenoid should be repaired or replaced
• Replace the powertrain control module

However, if you face any issue then visit us. We have stocked a wide range of best priced engine performance, intake valve control solenoid circuit, powertrain codes and a lot more to help you out in fixing your car.

• First of all, you must connect a scan tool to the OBD2 port in the vehicle
• The freeze frame codes should be observed properly and the condition of the vehicle when the code was actually set
• A road test of the vehicle should be performed under the same conditions of the freeze frame data
• The you must perform a visual inspection of the wiring and connectors for any damage or breaks
• You should check for continuity in the wiring with a Multimeter
• The data stream for the intake control system should be inspected with a scan tool
• Carefully check for any out of range readings from the sensor 

Common Mistakes When Diagnosing the P0077 Code 

if you follow all the steps and skip none of them, then you can easily diagnose P0077 error code. The most common mistake which people make is to get the intake valve control solenoid replaced without actually getting it tested. Doing this may or may not solve this issue and then you will have to perform all the diagnostic steps again without skipping them.