P977C Engine Trouble Code

When you check engine light came on code P977C the reason should be . However your vehicle's manufacturer may have a different definition for the P977C OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

When your car's 'P977C Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the engine conducted light turned off.

P977C Code Meaning :

The oxygen (02) sensors on your car measure the oxygen in the exhaust to determine how rich or lean the ratio of fuel and air are in the cylinders. Optimizing this mixture means better fuel economy and fewer exhaust emissions.

P977C OBD-II Diagnostic Powertrain (P) Trouble Code Description

P977C engine trouble code is about Engine Shutoff Solenoid Malfunction. Throttle/Pedal Position Sensor/Switch A Circuit Intermittent and Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector) causes most of code P977C.

Reason For P977C Code

The reason of P977C OBD-II Engine Trouble Code is Throttle/Pedal Position Sensor/Switch A Circuit Intermittent.

P977C the main thing to check is to verify the operation of the VCT solenoid in the engine. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific service repair manual to perform component tests for the VCT unit.

How To Repair P977C Code

Before starting let's see P977C repairing process steps:

• Qualified technicians will begin by using a scan tool to access P977C code stored in the ECU.
• Technicians will note P977C code present and any freeze frame data associated with them.
• After all, if you sure the engine trouble is finished, the code will be cleared.

The transmission uses hydraulic pressure, controlled by solenoids, which are controlled by the PCM, to shift gears and provide torque converter lockup. The PCM calculates the necessary amount of pressure at any given time to optimize vehicle operation.

If nothing is done to repair the persistent P977C code, the ECU will put the vehicle into a limp mode. This mode limits the top speed and reduces engine power greatly to protect the engine.

Sometimes P977C code comes with P977C00 code.

Diagnosis Of Engine Error OBD Code P977C

It's essential to diagnose this trouble code. Then are some way which a handyperson should follow for diagnosing the problem that started a P977C trouble code to be stored

The first step is introductory and is about reacquiring all the canons that have been set. For this, the individual scanner will have to be plugged into the individual harborage of your vehicle. Make sure you indurate frame the data. Any canons that were set previous to the P977C code will have to be sorted first, as they may have been the reason for the law to set in the first place. It's always good to rule that out.

The coming step is to run a introductory examination of all the electrical circuits, connectors, wiring etc for damages similar as becks, erosion, fraudulent legs etc. All of these will have to be repaired or replaced. After that's sorted, clear the canons and go on a test drive to see if it resets. In case it resets, you'll have to continue your opinion. Depending on your vehicle you may have a vacuum operated selector or a vacuum solenoid if it's electrically actuated. In the case of the former, a hand held vacuum pump will have to be used to testit.The purpose is to see if the internal stopcock is getting turned by the selector, motor or solenoid. In order to do this, a command can be transferred to the system with scanner or by driving the vehicle under the special conditions that will spark the system. While this is passing keep an eye on the checkup tool data for the result.