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P2266 is a diagnostic trouble code (DTC) for "Low Voltage in Water in Fuel Sensor". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light is on diagnostic inspection. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The P2266 code is set when low voltage is detected in the WIF (Water in Fuel) Sensor circuit at the Engine Control Module (ECM). Other fuel system codes may set along with P2266.
P2266 is the generic OBD-II code for Water in Fuel Sensor Circ Low. This code indicates a low voltage signal in the WIF circuit.
A variety of conditions may trigger a vehicle to set this code:
The P2266 code may cause no symptoms at all, or the vehicle may misfire, hesitate, or fail to start.
Mechanics may use a variety of procedures in diagnosing the cause of a P2266 code, beginning with using a scan tool to verify that the code is active. If it is, the next step is to measure the voltage between the Water in Fuel Sensor Signal circuit and Water in Fuel Sensor Ground circuit of the harness connector to ensure that it measures at the correct voltage. Depending upon the results of the voltage test, the technician may replace the WIF Sensor, or go on to test voltage in other parts of the system, or the Engine Control Module itself. Appropriate repairs or replacement may then be made.
If proper procedures aren’t followed, the source of the problem could be missed due to the fact that there are several components involved in the functioning of the WIF Sensor. Each step in the process must be followed in order to determine whether the fuel is being contaminated, or there is a fault in the wiring, connector, or ECM.
Repairing the P2266 code may involve a variety of steps, depending upon the source of the fault:
Sensors frequently demonstrate intermittent condition behaviors, only occasionally setting the P2266 code. This can make diagnostics a challenge, because it can be difficult to determine the source of the fault if the problem is not consistent. Vehicle sensors are typically considered part of regular maintenance procedures and should be replaced according to the manufacturer’s recommendations at routine intervals in order to prevent further potential damage.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.