Cylinder Head Temperature Sensor 6L 3V Rear of right cylinder head. These symptoms are a clear indication that you may have a bad brake booster on your truck. If this sensor cannot properly read and relay that data, the P0557 code will appear. Crankshaft Position Sensor 6L 3V Near crankshaft pulley. Check your vacuum hoses for vacuum loss you also have vacuum port so you need to inspect that for vacuum loss also you need to check the brake booster including the brake booster check valve, you need a vacuum gauge to carryout the test, should read 15-22 In-Hg Feb 12, 2013 by 10.
Know the condition of the brake booster in your F-150 now by performing two simple tests at home, without the need to use any tools. Brake Booster Sensor On brake booster. Camshaft Position Sensor 1 5. In applications that use a hydraulic brake booster, leaking hydraulic fluid lines and leaky connections can cause the P0557 code to appear. For this reason, if you suspect that your brake booster may be having a problem, or your Check Engine Light has come on, by a professional technician, such as one from YourMechanic. The brake booster sensor is an important piece of the braking system for vehicles equipped with brake booster pumps. The sensor responsible for monitoring pressure within the brake booster is prone to malfunctioning as well.
In the olden days of drum brakes, we didn't have to worry about such things. Autolamp Sensor Center of dash. Usually, a vehicle with a failed brake booster vacuum sensor will produce a few symptoms that can notify the driver of a potential problem that. If, during the course of the drive, the code appears again, then it will be confirmed that the problem is indeed related to the P0557 code and not an intermittent issue that may be caused by electrical malfunctions. Cylinder Head Temperature Sensor 5. Camshaft Position Sensor 2 5. Camshaft Position Sensor 1 6L 3V Front of right cylinder head.
The technician will use a voltmeter to test the circuits around the brake booster pressure sensor and the powertrain control module. The technician will view the trouble code and see the time that it was stored. Ambient Air Temperature Sensor Front of engine compartment. Camshaft Position Sensor 6L 2V Front of left cylinder bank. They are usually installed in the brake booster and work to monitor the amount of vacuum present inside of the booster. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
Common mistakes when diagnosing the P0557 code While a malfunctioning brake booster will cause the P0557 code to appear, the code can also be caused by an electrical malfunction or a leaking vacuum line. Electronic Throttle Position Sensor Throttle body. Pro Tip: Some Ford F-250 Diesel trucks have hydroboost brakes. Often the problem is rooted in an electrical malfunction or a leaking vacuum line within the brake system. For the full step-by-step article, please visit There's nothing more unsettling than pressing the brake pedal and instead of a smooth, steady stop, you are rewarded with a high, hard pedal, and a longer than expected stopping distance. C109E Vacuum sensor circuit fault C109D Low vacuum condition. Knock Sensor 6L 2V Top rear of engine.
Also, the booster internal diaphragm may rupture or some other component may wear out and render the unit inoperative. Camshaft Position Sensor 2 6L 3V Front of left cylinder head. P0557 code definition The P0577 vehicle trouble code indicates an issue with the brake booster pressure sensor circuit. This is an indication that the brake booster is receiving vacuum assist from the engine. Otherwise, check for a vacuum leak on the booster vacuum hose, on the hose fittings and on the booster itself.
A problem with the brakes is inherently hazardous, and declining brake performance is dangerously unpredictable. But given the prevalence of brake discs, this is a very real problem today. YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. They monitor an important signal for the vacuum that allows the entire power brake system to work. They monitor the vacuum level to ensure that there is always enough vacuum present for the power brakes to operate correctly, and will set off a brake or service booster light when they detect that the vacuum has fallen below acceptable levels. The code itself will not prevent the engine from starting, but that does not mean that the vehicle is safe to drive when the brake booster does not have proper pressure. Go on to the next step.
Evaporative Temperature Sensor Right side of dash. Disconnect the clip, colored in yellow, that connects the pedal with the booster. This system greatly increases the pressure you can apply to the brake pedal when slowing or stopping your pickup. What repairs can fix the P0557 code? At the same time, start the engine and let it idle. The P0557 code is serious enough to warrant getting a professional to diagnose the problem as soon as the code appears. After that has been observed, the codes will be cleared before the vehicle is taken for a test drive. Wheel Speed Sensor Left Rear Left rear wheel hub assembly.