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 is getting a weak signal from the sensor that listens for knocking sounds in the engine. It's like trying to hear a whisper in a noisy room.
The engine control module (ECM) is detecting a low voltage signal from the knock sensor circuit, which may indicate a problem with the sensor or its wiring.
The P1336 code is triggered when the ECM detects that the voltage signal from the knock sensor is below the expected range. This sensor is responsible for detecting unusual vibrations or knocking sounds in the engine, which can indicate inefficient combustion or other issues. A low circuit signal can be caused by a faulty sensor, poor electrical connections, or damaged wiring.
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Faulty knock sensor
• Damaged wiring or connectors
• ECM malfunction
ECM: Engine Control Module, the computer that manages engine functions.
Knock Sensor: A device that detects engine knocking or pinging.
• Use an OBD-II scanner to confirm the code.
• Inspect the knock sensor and its wiring for damage.
• Test the sensor's voltage output with a multimeter.
• Replace the faulty knock sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $400
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect engine wiring and connectors.
• Ensure timely maintenance of engine components.
• Use high-quality fuel to prevent engine knocking.
Sensor Issue
• Avoid driving aggressively until the issue is resolved.
• Have the vehicle inspected by a professional mechanic.
Check with your vehicle manufacturer for warranty coverage on engine sensors.
The P1336 code has been associated with engine performance issues, particularly in older vehicles with worn-out sensors.
Moderate – It should be addressed soon to prevent further engine damage.
Ignoring this code can lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle stationary with engine idling
The knock sensor is typically located on the engine block, cylinder head, or intake manifold.
Q: Can I drive with a P1336 code?
A: It's not recommended to drive for long periods with this code, as it may lead to engine damage.
Q: How do I know if my knock sensor is bad?
A: Symptoms include poor engine performance, increased fuel consumption, and the Check Engine Light being on.
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