Ford Ecosport P0330: Knock Sensor ” Bank 2″ – Circuit Malfunction

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P0330 is a powertrain OBDII trouble code that has the same meaning for the Ford Ecosport as it would any other vehicle. By definition, it means that the vehicles ECM/PCM isn’t getting the proper signal from the knock sensor. Clearing this code typically requires a new knock sensor. The second most common cause is a short or break in the wiring harness.

Ford Ecosport P0330 Diagnosis

Modern internal combustion engines utilize the knock sensor to allow for aggressive timing profiles. If the timing has gotten too aggressive it’ll cause the engine to knock. This sensor will let the computer know to dial back the timing.

 

P0330 Symptoms: Ford Ecosport

P0330 Ford EcosportP0330 Causes: Ford Ecosport

Most of the time, the fix for P0330 in the Ecosport (or most any vehicle) is going to come from replacing the knock sensor or repairing the wiring harness. Here are the most common causes of P0330.

 

Wiring Harness

P0330 is telling you that the ECM/PCM is not getting the proper signal from the knock sensor. When this happens the computer will operate as though it is getting no signal from the sensor at all. A good place to start would be to check the wiring leading from the sensor and see if any of it has been damaged or frayed. Most of them bolt right into the block, which makes accessing them difficult. Their proximity to the engine block means that they are often susceptible to damage.

Checking Car Wiring Circuits For Continuity with a Multimeter (Youtube)
How To Find a Electrical Short On Most Any Vehicle (Backyard Mechanic)

Knock Sensor

If you find that the wiring harness is ok, and the code is still persistently registering, it is time to test and/or replace the knock sensor. There are guides out there on how to test a knock sensor, but they are very affordable. They can also take a little digging to get to, which makes replacing it the way to go.

How to Test a Knock Sensor (It Still Runs)
Knock Sensor Ford Ecosport (AMAZON)

 

Conclusion

The most difficult part in fixing your Ecosport’s engine to clear the P0330 code is going to be finding room to maneuver and inspect the Knock Sensor and wiring harness. This can be tedious work. If there is anything that you would like to add, please feel free to do so below. Good luck!