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 having trouble checking a part of the engine that listens for knocking sounds on one side of the engine.
The car's control module is trying to test the knock sensor on the second bank of the engine, but it's not getting the expected response.
P1379 indicates a fault in the control module's ability to perform a self-test on the knock control system for Bank 2. This involves the module sending a test pulse to the knock sensor and checking for an appropriate response. If the response is not as expected, this code is set.
• Check Engine Light is on
• Decreased engine performance
• Engine knocking noises
• Faulty knock sensor on Bank 2
• Wiring issue in the knock sensor circuit
• Faulty control module
Control Module: The computer in the car that controls various functions.
Knock Sensor: A device that detects knocking noises in the engine.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the knock sensor on Bank 2.
• Test the knock sensor for proper operation.
• Replace the knock sensor on Bank 2 if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Camry
• Honda Accord
• Nissan Altima
• Regular maintenance checks
• Ensure engine oil is at proper levels
• Use high-quality fuel
Sensor Issue
• Avoid hard acceleration until fixed.
• Schedule a repair as soon as possible.
Check with the manufacturer for specific warranty coverage on engine sensors.
This code has been known to appear in vehicles with high mileage or those that have had previous engine work done.
Moderate – It should be addressed soon to avoid potential engine damage.
Ignoring this code could lead to engine damage, which may affect vehicle safety.
• Engine must be running
• Vehicle at operating temperature
The knock sensor for Bank 2 is typically located on the engine block, cylinder head, or intake manifold on the second bank of cylinders.
Q: What is a knock sensor?
A: A knock sensor detects engine knocking or pinging, which can harm the engine.
Q: Can I drive with a P1379 code?
A: It's not recommended to drive for long periods with this code, as it could lead to engine damage.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.