P2556 OBD Error Code: Problem & Solutions

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Stressed? Can’t solve the error code P2556? Parts Avatar has a solution for you! We have written down here all that you need to know about the error code P2556. In order to determine how rich or lean the ratio of fuel and air is in the cylinders, the oxygen (O2) sensors installed in the car measure the oxygen in the exhaust. It should be noted that evaluating this mixture signifies a better fuel economy and lesser exhaust emissions.

The engine control module installed performs the function of regulating the engine coolant level sensor/switch signal. Whenever the engine coolant level sensor/switch signal fails to fall out of the manufacturer’ specifications, the powertrain control module sets the OBD-II error code P2556.

What causes this problem with Engine Coolant Level Sensor/Switch Circuit?

• A malfunctioning engine coolant level sensor
• The harness in the engine coolant level sensor/ switch loose or short circuited
• A bad electrical connection running in the engine coolant level sensor/switch circuit

1. Engine Control Module - Facing The Error Code P2556? An Inferior Quality ECM Can Always Be Hazardous For The System Also It Is One Of The Primal Causes Behind The Occurring Of The Error Code P2556. Tune Into Parts Avatar For Supreme Quality ECM At Economical Prices.
2. Powertrain Control Module - Love Travelling? But Don’t Know The Reason Behind All These Problems? A Damaged Powertrain Control Module Leads To Downward Emissions Along With Other Issues Like A Sluggish Engine Crank, Failure In The Emission System Etc. We Advise You To Get Your Distorted PCM Changed Now By Simply Logging Into Parts Avatar.
3. Engine Coolant Level Sensor - Is Your Car Engine Light Still Staying ON After Clearing Or Your Car Engine Is Turning Off For No Reason? Then These Are Some Common Symptoms Indicating That Your Car Engine Coolant Level Sensor Is Damaged.
4. Engine Coolant System Parts - Did You Just Face Sudden Engine Stalling Without Any Evident Reason? Don’t Waste Time As It Is An Indication That There Are Some Issues In Your Engine Coolant System Parts. Don’t Waste Time And Get It Replaced Or Else P2556 Code Can Turn Up Again.
5. Thermostat - The Thermostat Performs The Function Of Blocking The Flow Of Coolant To The Radiator Until The Engine Has Warmed Up. A Defective One Can Be Hazardous For The System. Change Or Repair It Now!
6. Water Pump - Get Your Error Code P2556 Fixed Instantly With A New Water Pump. Parts Avatar Right Place That Provides The Best Water Pumps Across The Country.
7. Coolant Hoses - A Defect In The Coolant Hoses Can Hamper The Overall Functioning Of The System. So We Advise You To Get It Changed As Soon As Possible. Tune Into Parts Avatar Now To Grab Amazing Offers.
8. Cooling Fan - Suddenly Seeing Blown Fuses, Is Your Vehicle Overheating? Don’t Worry! All You Need To Do Is To Change Your Cooling Fan Now. Now Get Your Cooling Fan Delivered Right At Your Doorstep With Parts Avatar. Isn’t That Amazing?
9. Radiator - The Internal Combustion Engines Are Cooled By Circulating A Liquid Called Engine Coolant Through The Engine Block, Where It Is Heated, Then Through A Radiator Where It Loses Heat To The Atmosphere, And Then Returned Back To The Engine. It Is Recommended To Change Or Mend It As Soon As Possible.
10. Engine Temperature Sensor - Seeing The Error Code P2556? Well, It Could Be Triggered Due To A Fault In The Engine Temperature Sensor. Apart From This One Is Likely To Notice A Whole Lot Of Problems With The Engine Too. Repair Or Replace Now!

Willing to know some common symptoms of OBD code P2556? Your wish is our demand. Have a look at them below:

Common Symptoms

• Excessively heating engine (if the coolant level is insufficient)
• An illuminated MIL lamp along with the stored trouble code

We have listed out some ways which would help you to correct the occurrence of OBD code P2556. They are mentioned here as follows:

• Make sure that repairs or replacements are performed of a damaged engine coolant level sensor
• Repair or replace all the corroded or shorted harnesses in the engine coolant level sensor/ switch
• Fix a weak electrical connection running in the engine coolant level sensor/switch circuit

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of ECM, PCM, engine coolant level sensor, engine coolant system, cooling system, thermostat, water pump, coolant hoses, cooling fan, radiator, engine temperature sensor and many more. Now all your problems would vanish within no time.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

The PCM gets the data through the engine coolant level sensor (usually a two or three-wire variable resistance sensor) found in the engine coolant system. This sensor has a voltage wire (typically with a 5-volt reference signal) and a ground wire. In order to control the engine temperature, the PCM makes use of the reference voltage wire. The sensor employs a float on a mechanical arm, as the float acts to make variations in the coolant level (generally inside of the coolant reservoir). The float is elevated or lowered affecting the mechanical arm which regulates the system of the electronic contacts that differ on the basis of resistance. The coolant level tends to increase with a decrease in the resistance. This further leads to an increase in the signal voltage input signal transmitted to the PCM. As the resistance increases, the coolant level falls, thereby initiating a fall in the input signal voltage to the PCM. A code is stored and a service engine soon lamp illuminates, when if the input signal voltage from the engine coolant level sensor decreases below a certain degree (or peaks above it). A thorough diagnosis of the engine cooling system should be performed before even performing any repairs (if the vehicle exhibits signs like an overheated engine). Well, in almost all cases, the diagnosis should include a proactive chemical block test. To perform this test, one might need special application device to capture steam from the engine cooling system where a chemical agent reacts to any hydrocarbons found there.

By performing such a test for hydrocarbons in the engine cooling system, the mechanic can ensure that a replacement of parts like as the thermostat, water pump, coolant hoses, heater core, or radiator will correctly repair the overheating condition by ruling out block and cylinder head (or cylinder head gasket) error. Now that the chances of a malfunctioning engine block or cylinder head have been deleted, the correction of the problem can be as simple as using a cooling system pressure tester to locate a coolant leak, and then mending it. If in case, you fail to find any coolant leaks, a defective thermostat, cooling fan, or radiator (circulation) should be suspected. A malfunctioning engine temperature sensor should be blamed, if in case, the engine appears to be functioning in order and doesn't appear to be overheating. Use a scanner or code reader and a digital volt ohmmeter, and access to a manufacturer's wiring schematic if you want to diagnose this code.

Common Mistakes When Diagnosing the P2556 Code

Here we have listed a few common mistakes that should be avoided while diagnosing the error code P2556:

It should be noted that the mechanic should follow all the repair steps in order to avoid missing any steps. As it can lead to misdiagnoses and expensive after repairs also. If there are other trouble codes stored, all of them should be treated in order.