P0369

Camshaft Position Sensor B Circuit Intermittent (Bank 2)

Powertrain Ignition System Camshaft Sensor - Bank 2 🟡 Moderate — Fix within a week ⚠️ Drive with Care
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What This Actually Means

In plain language — no jargon

The camshaft position sensor on Bank 2 is sending an inconsistent or droppy signal to the engine computer, like a radio that keeps cutting in and out. This causes the ECU to lose track of valve timing momentarily, triggering the fault code.

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Symptoms You May Notice

3 known symptoms for this code
Check Engine Light illuminated
Rough idle or occasional misfires
Reduced fuel economy and hesitant acceleration
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How Your ECU Detects This

Technical sensor logic and voltage thresholds

The ECU monitors the camshaft position sensor signal voltage and frequency to track valve timing on Bank 2. It expects a stable square-wave signal synchronized with crankshaft position. When the signal drops out intermittently or shows erratic transitions, the ECU detects a circuit fault.

Voltage & Parameter Thresholds

ParameterNormal RangeFault Condition
Signal Voltage 0.5–4.5V (digital square wave) Voltage spikes, dropout, or noise >500ms
Signal Sync Deviation ±2° camshaft timing error tolerance >5° deviation or multiple signal loss events
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Diagnostic & DIY Fix Guide

Check these in order — from cheapest to most complex
1
Camshaft Position Sensor (Bank 2)
Locate the sensor on the intake or exhaust camshaft housing Bank 2 side, unplug the connector, unbolt the sensor, and install the new unit with a new O-ring.
2
Sensor wiring harness and connector
Inspect and reseat the CMP sensor connector; clean corrosion from pins and apply dielectric grease to prevent signal dropout.
3
Camshaft timing chain or belt
If sensor is new but code persists, have the timing chain inspected for wear or slippage that causes erratic camshaft movement.
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When to See a Professional Mechanic

Not all fault codes are safe to DIY

Code P0369 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.

Safety note: OBD-II codes identify the system or circuit where a fault was detected — they do not always identify the exact failed component. A professional mechanic using live sensor data will diagnose the root cause more accurately than replacing parts based on the code alone.
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How to Clear Code P0369

What happens after you fix the fault

Once the fault is repaired, P0369 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.

The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.

✅ Safe to Clear When
  • Fault has been diagnosed and repaired
  • You want to confirm the repair worked
  • Code appeared after a sensor was cleaned
⚠️ Do Not Clear When
  • Preparing for an emissions/PUC test
  • Root cause is still undiagnosed
  • Check engine light is flashing
Emissions test note: Clearing codes resets OBD readiness monitors. Most vehicles need 50–100 km of mixed driving before monitors complete. Do not clear codes immediately before an emissions or PUC inspection.