What Does P0369 Mean?
The ECM has detected an intermittent signal from camshaft position sensor B on bank 1. The exhaust cam sensor signal is cutting in and out, which disrupts the ECM's ability to accurately control sequential fuel injection and exhaust VVT. The driver may experience intermittent rough running, occasional misfires, brief hesitation, and variable engine performance as the ECM switches between normal and fallback modes.
Common Causes
35%
Loose, corroded, or oil-contaminated CMP sensor B connector making intermittent electrical contact
25%
Damaged or chafed CMP sensor B wiring that makes and breaks contact with engine vibration or thermal cycling
20%
CMP sensor B working loose from its mounting bore causing variable air gap to the reluctor ring
20%
Failing CMP sensor B with temperature-dependent internal intermittent fault
Diagnostic Steps
1
Monitor CMP sensor B signal on live data while performing a wiggle test on the connector and harness — signal dropouts during physical disturbance identify the intermittent connection point.
2
Inspect the CMP sensor B connector for oil intrusion, corrosion, or spread terminal contacts — clean with electrical contact cleaner and verify weatherpack seals are intact.
3
Check the CMP sensor B mounting for proper seating and bolt torque — a loose sensor can vibrate in its bore, causing intermittent signal loss.
4
If the intermittent is temperature-related (occurs only when engine is warm), apply heat to the sensor area with a heat gun while monitoring the signal — thermal expansion can open a marginal connection.
5
Trace the CMP sensor B wiring looking for areas where the harness contacts moving engine components or sharp edges that could cause intermittent chafing damage.
Estimated Repair Cost
$80 - $450
Parts + labor, varies by vehicle and location
The ECM has detected an intermittent signal from camshaft position sensor B on bank 1. The exhaust cam sensor signal is cutting in and out, which disrupts the ECM's ability to accurately control sequential fuel injection and exhaust VVT. The driver may experience intermittent rough running, occasion...
The most common cause of P0369 (Camshaft Position Sensor "B" Circuit Intermittent (Bank 1)) is: Loose, corroded, or oil-contaminated CMP sensor B connector making intermittent electrical contact
Typical repair costs for P0369 range from $80 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Generally safe for short-distance driving. The intermittent nature means the engine runs normally most of the time. During signal dropouts, the ECM switches to a fallback mode which may cause brief stumbles. The main concern is that the condition will worsen over time into a complete signal loss. Plan to have it repaired soon.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0369 to identify the root cause.
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Quick Info
Category
Powertrain
System
Ignition System
Difficulty
Type
Generic (SAE)
Recommended Tools
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