Knock sensor defective
Detects knocking sounds in the engine indicating combustion issues.
Costs
Every car issue can be caused by different things. Here are the most common ones
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Most Expensive
Moderate costs
Moderate costs
Cheapest case
Discussions
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Details
Probability
Based on the values and symptoms you have entered, a crude estimation of the probability of this problem can be made
HIGH
Typical consequences
If this defect is detected, it may lead to the following problems:
- Engine damage
- Failure of the exhaust emission test (Failure to pass the exhaust emission test)
Knock sensor functionality
The automatic transmission of a vehicle has a temperature sensor that measures the temperature in the transmission oil and transmits the information to the engine control unit. The transmission oil temperature sensor is usually a two-pole sensor with a variable resistor.
A voltage is applied to one pole of the resistor and a ground line to the other. The reference voltage helps the control unit to monitor the temperature of the gearbox. If the transmitted temperature is too high or too low, an error is stored in the control unit.