P0367 — Camshaft Position Sensor “B” Circuit Low #

Note: The exact wording of this diagnostic trouble code (DTC) may vary depending on the vehicle manufacturer (OEM). Below are known variations:

• Camshaft Position Sensor “B” Circuit Low (Generic/SAE)
• Camshaft Position Sensor B Circuit Low Input (Ford)
• Camshaft Position Sensor B Signal Low (Toyota)
• Exhaust Camshaft Position Sensor “B” Circuit Low (Hyundai/Kia)
• Bank 1 Sensor B Camshaft Position Circuit Low (GM)

Code P0367 Overview #

P0367 is a generic powertrain code triggered when the engine control module (ECM) detects a low voltage condition in the Camshaft Position Sensor “B” circuit. This sensor plays a vital role in tracking the camshaft’s rotational position, information the ECM uses to optimize fuel injection and ignition timing. A “circuit low” means the ECM is receiving a signal that’s below the sensor’s normal operating voltage range, suggesting a wiring, sensor, or ECM issue. This code most often applies to engines with variable valve timing, and “Sensor B” typically refers to the exhaust camshaft or the camshaft on Bank 2, depending on the engine configuration. Addressing P0367 promptly is important for maintaining proper engine performance and emission control.

Frequent Symptoms for Code P0367 #

A vehicle with a P0367 code may display several warning signs. The severity can range from subtle changes in engine behavior to more noticeable drivability issues. If you notice any of the following, the camshaft sensor circuit may be at fault:

• Illuminated Check Engine Light
• Rough idle or engine misfires
• Difficulty starting the engine or extended cranking time
• Loss of engine power or hesitation under acceleration
• Poor fuel economy
• Possible stalling at idle or low speeds
• Failure to pass emissions testing

Likely Causes of Code P0367 (Most to Least Common) #

Understanding the root cause of P0367 starts with the sensor circuit itself. The following list organizes potential causes by their frequency, starting with the most common:

1. Faulty camshaft position sensor “B” (the sensor itself has failed or is producing a weak signal)
2. Damaged, corroded, or shorted wiring/connectors in the sensor circuit
3. Issues with the sensor’s ground or power supply (open or high-resistance connections)
4. Oil contamination on the sensor or wiring (from leaks or spills)
5. Faulty ECM (rare, but possible if all else checks out)
6. Camshaft timing issues (stretched timing chain/belt or slipped timing)

Step-by-Step Diagnostic for Code P0367 #

Diagnosing P0367 involves a systematic approach. Even a simple wiring issue can mimic a bad sensor, so don’t skip any steps:

• 1. Confirm the code. Use an OBD-II scanner to verify P0367 is present and check for related codes (especially P0365, P0366, P0368, or P0369).
• 2. Visually inspect the camshaft position sensor “B”. Look for obvious damage, oil leaks, or loose connections at the sensor and wiring harness.
• 3. Check the wiring and connectors. With the ignition off, unplug the sensor and inspect for bent pins, corrosion, or damaged insulation. Repair as needed.
• 4. Test sensor voltage and ground. Using a multimeter, verify proper reference voltage (typically 5V), ground, and signal voltage at the sensor connector following your vehicle’s wiring diagram.
• 5. Test the sensor output. If possible, use an oscilloscope or scan tool data stream to check for a proper camshaft signal (waveform) while cranking or idling.
• 6. Check for timing issues. If all electrical tests pass, inspect the timing chain or belt for slack or alignment problems. This step may require partial engine disassembly.
• 7. Substitute with a known good sensor. If available, swap the sensor to confirm if the fault clears.
• 8. Evaluate the ECM. If the sensor, wiring, and timing are all good, ECM testing or replacement may be necessary (rare).

Possible Repairs for Code P0367 #

The repair for P0367 will depend on the diagnostic outcome. Prioritize fixing the most common causes before considering rare ones:

• Replace the camshaft position sensor “B” if it fails testing
• Repair or replace damaged wiring/connectors in the sensor circuit
• Clean oil or debris from the sensor and connector area
• Restore proper ground or power supply if found faulty
• Correct engine timing (replace/tighten timing chain or belt) if timing is off
• Replace or reprogram the ECM (only after ruling out all other issues)

Is It Safe to Drive with Code P0367? #

Limited. While many vehicles will still run with a P0367 code, performance and reliability may be compromised. The engine may stall, misfire, or run poorly, especially if the issue worsens or is combined with other codes. In rare cases, continued driving with a faulty camshaft position sensor circuit can cause further engine or catalytic converter damage. It’s recommended to address the issue as soon as possible and avoid prolonged operation if symptoms are severe.

Vehicles Most Commonly Affected by P0367 #

P0367 is a generic OBD-II code and can appear on many makes and models, especially those with dual overhead cam (DOHC) engines and variable valve timing. Some vehicles where this code appears more frequently include:

• Ford (Fusion, Escape, Focus, F-150)
• GM/Chevrolet (Equinox, Malibu, Silverado)
• Hyundai/Kia (Sonata, Santa Fe, Optima)
• Toyota/Lexus (Camry, RAV4, ES350)
• Nissan (Altima, Maxima, Murano)
• Honda/Acura (Accord, CR-V, TL)
• Chrysler/Dodge/Jeep (Charger, Grand Cherokee, Ram)

Common Mistakes & Best Practices with P0367 #

Misdiagnosing P0367 can lead to unnecessary parts replacement or unresolved issues. Here are typical pitfalls and best practices:

• Replacing the sensor without checking wiring or connectors
• Ignoring related codes that could point to a larger electrical problem
• Overlooking oil contamination on the sensor/wiring
• Not following the correct wiring diagram for your specific vehicle
• Failing to clear and retest codes after repair

Best practice: Always start with a thorough inspection and basic electrical tests before replacing components. Use OEM service information and wiring diagrams when available.

Quick FAQ for P0367 #

Here are answers to the most common questions drivers and technicians have about code P0367:

• Q: Can a bad camshaft sensor cause other codes?
  A: Yes. It can trigger misfire codes (P0300–P030x), timing codes, or even crankshaft sensor codes if the ECM has trouble synchronizing engine timing.
• Q: Do I need to clear the code after repair?
  A: Absolutely. Clear the code using a scan tool and retest by driving the vehicle. This verifies that the repair was successful and the issue does not return.
• Q: Is a camshaft sensor expensive to replace?
  A: Generally, camshaft sensors are moderately priced, but labor varies by vehicle. On most models, this is a straightforward repair.