P0367
Camshaft Position Sensor B Circuit Low Input (Bank 1)
The appearance of the standard OBD2 trouble fault code P0367 is an indicator that your vehicle ECU triggered a threshold alert for "Camshaft Position Sensor B Circuit Low Input (Bank 1)". Understanding the root component breakdown helps avoid expensive diagnostic fees.
Driver's Summary
Code P0367 means your vehicle detected a problem with the camshaft position sensor b circuit low input (bank 1) system. You may notice engine cranks but takes a long time to start, mil on, all of which are direct consequences of this malfunction. This is not a code to ignore — the underlying fault can rapidly worsen and lead to costly repairs if driving continues.
Symptoms
Engine cranks but takes a long time to start, MIL on
Common Causes
- Short to ground in sensor B circuit
- Failed camshaft sensor
- Low battery voltage
- PCM fault
How to Fix
- 1 Repair short to ground
- 2 Replace camshaft position sensor
- 3 Test battery and charging system
- 4 Test PCM
Technical Explanation
To set P0367, the PCM samples the affected circuit multiple times per second, comparing live readings against manufacturer-programmed operating windows. Misfire rate is counted per cylinder over rolling windows and compared against two thresholds: a catalyst-damaging rate (triggers flashing MIL) and an emissions-exceeding rate (triggers solid MIL). The PCM logs which cylinder is misfiring based on crankshaft position at the time of each detected event. Once confirmed, the code is stored as a permanent DTC and the MIL is activated. The freeze frame snapshot — recording RPM, load, coolant temperature, and fuel trim at fault detection — is also saved and is critical for accurate diagnosis.
Is It Safe to Drive?
This fault carries real mechanical risk. The root causes — including short to ground in sensor b circuit — can trigger a chain reaction of component failures if the vehicle continues to be driven. Have it towed or drive directly to a shop without delay.
Mechanic's Pro Tip
With P0367, always change the engine oil with the correct factory viscosity as the absolute first step before any electrical testing — dirty or wrong-viscosity oil prevents VVT actuators from responding properly regardless of solenoid condition. After the oil change, warm the engine fully and monitor camshaft advance angle live on a scan tool; if it still won't advance to the commanded target, then test the VVT solenoid. Cleaning the solenoid's internal filter screen (often packed with sludge) resolves a large percentage of these codes without replacing the solenoid.
Sensor replacement: 100 - 250