Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the sensor that listens for knocking noises in the engine. It's like when you hear a strange noise in your room and can't find where it's coming from.
The P1335 code indicates that the signal from the knock sensor 5 is higher than expected, which could mean the sensor is malfunctioning or there is an issue with the wiring.
The knock sensor detects vibrations caused by engine knock or detonation. A 'circuit high' condition means the sensor output voltage is higher than the expected range, which can be due to a faulty sensor, shorted wiring, or a problem with the engine control unit (ECU).
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Faulty knock sensor
• Short circuit in the wiring
• Faulty engine control unit (ECU)
Knock Sensor: A device that detects engine knocking or pinging.
ECU: Engine Control Unit, the brain of the car that controls engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the knock sensor for proper operation.
• Replace the knock sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the ECU if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Toyota Camry
• Honda Accord
• Nissan Altima
• Regularly inspect and maintain engine wiring.
• Use quality fuel to prevent engine knock.
• Perform routine engine maintenance.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Monitor fuel consumption and engine performance.
Check if the vehicle's powertrain warranty covers sensor replacements.
This code has been associated with sensor issues in vehicles with higher mileage.
Moderate – Addressing this issue promptly can prevent further engine damage.
Driving with a faulty knock sensor can lead to engine damage and increased emissions.
• Engine at operating temperature
• Vehicle stationary
The knock sensor is usually located on the engine block, cylinder head, or intake manifold.
Q: Can I drive with a P1335 code?
A: It's not recommended to drive for long periods with this code as it can lead to engine damage.
Q: How do I reset the Check Engine Light after repairs?
A: Use an OBD-II scanner to clear the code after repairs are completed.
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