P0328
Knock Sensor 1 Circuit High Input Bank 1
2017-2017 Ford Flex 3.5L V6 EcoBoost
Moderate SeverityPowertrainGeneric (SAE)
The 2017 Ford Flex is equipped with a 3.5L V6 turbocharged gasoline engine. Below you'll find detailed p0328 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
High voltage from knock sensor 1, Bank 1.
Symptoms
- Check Engine Light
- Excessive timing retard
Common Causes
- Short to voltage
- Faulty sensor
- Engine mechanical issue
Diagnostic Steps
- Test voltage
- Check for shorts
- Investigate engine noise
Repair Notes
Replace sensor. Check for engine issues.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0328 on Other Vehicles
Common Questions
What does code P0328 mean on a 2017-2017 Ford Flex?
P0328 stands for "Knock Sensor 1 Circuit High Input Bank 1". High voltage from knock sensor 1, Bank 1.
What are the symptoms of P0328 on a Ford Flex?
Common symptoms of P0328 include: Check Engine Light, Excessive timing retard.
What causes P0328 on a 2017-2017 Ford Flex?
Common causes of P0328 include: Short to voltage, Faulty sensor, Engine mechanical issue.
Last updated: March 2026
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