P2364 – Cylinder 13 Knock Sensor Circuit

System: Powertrain | Standard: ISO/SAE Controlled | Fault type: Circuit | Location: Cylinder 13

Definition source: SAE J2012/J2012DA (industry standard)

DTC P2364 indicates the powertrain control module has detected an electrical problem in the knock sensor circuit assigned to cylinder 13. A “circuit” DTC focuses on the integrity of the sensor signal path (sensor, wiring, connectors, and module input) rather than confirming a mechanical engine knock condition by itself. Because sensor layouts, cylinder numbering, and monitoring strategies vary by vehicle, confirm the exact circuit routing, connector views, and test specifications in the applicable service information before testing or replacing parts.

What Does P2364 Mean?

P2364 means Cylinder 13 Knock Sensor Circuit. Under the SAE J2012 DTC structure, this entry identifies a fault detected in the electrical circuit used to monitor knock sensor activity for the cylinder 13 assignment. The code points you toward circuit-level diagnostics (such as opens, shorts, poor connections, or signal integrity problems) affecting the knock sensor input the control module expects to see. The DTC does not, by itself, prove that engine knock is occurring; it indicates the knock sensor circuit is not being interpreted as valid.

Quick Reference

• System: Powertrain
• Official meaning: Cylinder 13 Knock Sensor Circuit
• Standard: ISO/SAE controlled
• Fault type: Circuit
• Severity: MIL illumination is possible; the control module may limit performance or alter ignition strategy, potentially affecting drivability under load.

Symptoms

• MIL/Check engine light: Warning lamp illuminated and P2364 stored as current or pending.
• Reduced performance: Noticeable loss of power, especially during acceleration or hill climbs.
• Poor fuel economy: Increased fuel consumption due to conservative spark control strategies.
• Hesitation: Momentary stumble or delayed response when tip-in throttle occurs.
• Rough running: Intermittent roughness under load if the engine management cannot reliably use knock feedback.
• Timing changes: Perceived sluggishness consistent with ignition timing being adjusted away from optimal.
• Companion codes: Additional sensor, circuit, or misfire-related DTCs may appear depending on how diagnostics are grouped.

Common Causes

• Connector issues: Loose, unseated, contaminated, or damaged knock sensor or harness connectors affecting circuit integrity.
• Harness damage: Chafed, pinched, cut, or heat-damaged wiring between the knock sensor for cylinder 13 and the control module.
• Open circuit: Broken conductor inside insulation, poor splice, or partially backed-out terminal creating an open in the signal or return path.
• Short to ground: Sensor signal wire rubbed through and contacting engine ground or another grounded circuit.
• Short to power/reference: Signal wire shorted to a power feed or reference circuit due to insulation damage or incorrect routing/repairs.
• Poor ground path: High resistance in the sensor ground/return or shared ground point (varies by vehicle), including corrosion or loose fasteners.
• Terminal fit problems: Spread pins, poor pin tension, fretting, or corrosion at terminals causing intermittent or unstable circuit behavior.
• Sensor internal fault: Knock sensor for cylinder 13 internally open/shorted or otherwise electrically failed.
• Control module circuit fault: Internal fault in the input circuit or conditioning circuitry (diagnose only after wiring/sensor checks pass).

Diagnosis Steps

Useful tools include a scan tool capable of reading freeze-frame and live data, a digital multimeter, and vehicle-specific wiring diagrams and connector views from service information. Back-probing leads, a test light where appropriate, and basic hand tools help with connector inspection. If available, a lab scope can help evaluate signal integrity, but confirm test methods and specs in service procedures.

1. Confirm the code and context: Scan all modules for DTCs, record P2364 plus any related sensor, power, ground, or communication codes, and save freeze-frame data. Clear codes only after documentation.
2. Verify the complaint: Start the engine if possible and see whether P2364 resets immediately or only under certain conditions. Note any drivability changes and whether the MIL is commanded on.
3. Check service information: Identify the knock sensor associated with cylinder 13 (location and connector ID varies by vehicle), the correct circuit routing to the control module, and any published inspections or harness routing updates.
4. Perform a thorough visual inspection: With ignition off, inspect the sensor connector, harness routing, and nearby components for rubbing, heat damage, oil intrusion, or recent repair work. Pay close attention to areas near brackets, exhaust/heat shields, and engine lifting points.
5. Connector and terminal checks: Unplug the sensor connector and module-side connector (as directed by service info). Inspect for corrosion, moisture, bent pins, spread terminals, or poor pin retention. Correct any terminal fit issues before deeper electrical testing.
6. Wiggle test for intermittents: Reconnect as needed, run the engine or key-on checks per service info, and gently move the harness and connectors while monitoring scan tool data and DTC status. If the fault appears/disappears with movement, isolate the exact segment and connector causing the change.
7. Circuit continuity testing (power off): With the ignition off and connectors unplugged as required, test continuity of the knock sensor signal circuit and any dedicated return/ground circuit between the sensor connector and the control module connector. If continuity is not present, locate the open (broken wire, failed splice, damaged terminal).
8. Short-to-ground and short-to-power checks: With circuits isolated (connectors unplugged), check the signal circuit for unintended continuity to chassis ground and to power/reference feeds as applicable. If a short is found, inspect the harness for contact points and repair wiring/insulation damage.
9. Voltage-drop testing under load: If the circuit uses a ground/return path, perform voltage-drop tests on the ground/return and any relevant feeds while the circuit is operating (method varies by vehicle). Excessive drop indicates high resistance at a connection, splice, or ground point rather than a failed sensor.
10. Sensor electrical verification: Test the sensor per service information (method and pass/fail criteria vary by vehicle). If sensor tests fail and wiring checks pass, replace the sensor and ensure correct installation and connector seating.
11. Live-data logging and recheck: After repairs, clear codes, run the specified drive cycle or operating conditions, and log relevant knock sensor-related PIDs (availability varies) to confirm stable readings and that P2364 does not return.
12. Escalate to control module diagnosis last: Only after sensor, wiring, terminals, power, and ground paths test good, follow service procedures to evaluate the control module input circuit. Confirm connector pin fit and circuit integrity before considering module replacement or reprogramming.

Professional tip: Treat P2364 as a circuit fault first: many repeat failures come from subtle terminal tension problems or harness rub-through that only shows up with engine movement and vibration. If the code is intermittent, prioritize the wiggle test and voltage-drop checks at connectors/grounds while the fault is active, and document exactly which movement or load condition triggers the change.

Possible Fixes & Repair Costs

Repair costs for P2364 can vary widely because the fault is circuit-related and the true cause may be a sensor issue, wiring/connector damage, or a control-module input problem. Total cost depends on diagnostic time, parts required, and access labor (varies by vehicle).

• Repair wiring faults: Restore damaged, pinched, chafed, or heat-damaged wiring in the cylinder 13 knock sensor circuit using proper splices and routing.
• Clean and secure connectors: Address corrosion, moisture intrusion, loose terminals, bent pins, or poor pin fit at the knock sensor and harness connectors.
• Correct power/ground issues: Repair open feeds, poor grounds, or high-resistance connections discovered during voltage-drop testing (varies by vehicle design).
• Replace the knock sensor (verified faulty): Replace only after confirming the sensor fails circuit checks and the harness/connectors are intact.
• Address shielding/EMI concerns: Repair damaged shielding or improve harness routing if testing shows induced noise affecting the circuit (varies by vehicle).
• Control module input repair (rare): If all external circuit tests pass and the fault persists, follow service information for module pin testing and replacement/programming procedures.

Can I Still Drive With P2364?

You may be able to drive with P2364, but it is not recommended for extended use because a knock sensor circuit fault can lead the control system to limit performance or use less-optimal ignition strategies, potentially causing drivability issues. If you experience reduced power, severe misfire, abnormal engine noise, stalling, no-start, or any warning that affects braking/steering stability, do not drive—have the vehicle inspected and repaired.

What Happens If You Ignore P2364?

Ignoring P2364 can result in an ongoing malfunction indicator light, repeated fault resets, and degraded engine performance as the system compensates for an unreliable knock sensor circuit. Over time, continued operation with incorrect knock control strategy can increase the chance of poor fuel economy, hesitation, and drivability complaints, and it can complicate diagnosis if additional faults are set.

Last updated: February 15, 2026

Vehicles Commonly Affected by P2364

• Vehicles with high cylinder-count engines: Platforms that include cylinder numbering extending to 13 (varies by vehicle design).
• Applications using multiple knock sensors: Systems that monitor knock across multiple banks/sensor groups.
• Vehicles with knock-sensor sub-harnesses: Designs where intermediate connectors or sub-harness routing increases exposure to connector issues.
• Engines with sensors mounted in hot/high-vibration areas: Installations where heat cycling and vibration can stress wiring and terminals.
• Vehicles with recent engine or harness work: Repairs that may have disturbed routing, shielding, or connector seating.
• Vehicles operated in corrosive environments: Conditions that increase the likelihood of connector corrosion or moisture intrusion.
• Vehicles with rodent or debris exposure: Situations that can lead to harness damage and intermittent opens/shorts.
• Vehicles with aftermarket electrical modifications: Non-original wiring changes that may introduce poor grounds or electrical noise.

Next step: If P2364 is active, focus on connector condition, harness integrity, and verified circuit testing first; then confirm the repair by clearing the code and completing the drive cycle or monitoring conditions required for the fault test to run.