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 one of the sensors that listens for engine knocking sounds. It's like the car's ear isn't working properly.
The engine control module (ECM) has detected a low voltage signal from the knock sensor circuit for sensor 4, indicating a potential issue with the sensor or its wiring.
The knock sensor is responsible for detecting engine knocking, a condition where fuel burns unevenly in the engine's cylinders. This sensor sends a voltage signal to the ECM. If the voltage is too low, it suggests a problem with the sensor, its wiring, or the ECM itself.
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Faulty knock sensor
• Damaged wiring or connectors
• ECM malfunction
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• 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 knock sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$100 - $300
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect engine wiring.
• Use high-quality fuel.
• Perform scheduled maintenance.
Sensor Issue
• Do not ignore the Check Engine Light.
• Consult a professional mechanic if unsure.
• Avoid driving aggressively until the issue is fixed.
Check with your vehicle manufacturer for warranty coverage on sensors.
This code has been associated with sensor failure due to prolonged exposure to engine heat.
Moderate – Address the issue soon to prevent potential engine damage.
Driving with an unresolved knock sensor issue can lead to engine damage and increased emissions.
• Engine at operating temperature
• Vehicle stationary
The knock sensor is typically located on the engine block, cylinder head, or intake manifold.
Q: Can I drive with a P1332 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 reset the Check Engine Light after repairs?
A: You can use an OBD-II scanner to clear the code after repairs are completed.
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