P0336 — Crankshaft Position Sensor “A” Circuit Range/Performance #

Note: The wording of this trouble code can differ between vehicle manufacturers. Always consult OEM documentation for vehicle-specific details.

• Crankshaft Position Sensor “A” Circuit Range/Performance (General, most OEMs)
• Crankshaft Position Sensor Circuit Performance (GM, Ford)
• Engine Speed Sensor Circuit Range/Performance (Volkswagen/Audi)
• CKP Sensor Circuit Range/Performance (Toyota, Honda)

Summary of DTC P0336 #

DTC P0336 signals that the Crankshaft Position Sensor “A” (CKP sensor) in your engine is not providing readings within the expected range, or its signal is inconsistent. The CKP sensor is a critical component that monitors the position and rotational speed of the crankshaft, allowing the engine control module (ECM) to manage ignition timing and fuel injection accurately. When this sensor malfunctions or its circuit experiences irregularities, the ECM cannot reliably determine engine position, leading to drivability problems or even a failure to start. This code can be triggered by sensor faults, wiring issues, or problems with related components, and should be addressed promptly to avoid engine performance degradation or stalling. In many vehicles, a failed crankshaft position signal will also trigger a check engine light and may store additional related codes.

Common Symptoms for Code P0336 #

When P0336 is set, you may notice a range of engine performance issues. These symptoms can be subtle at first, but may quickly worsen if ignored:

• Check Engine Light illuminated
• Hard starting or no start condition
• Engine misfiring or rough running
• Intermittent stalling, especially at idle
• Poor acceleration or reduced engine power
• Irregular tachometer readings
• Decreased fuel economy

Most Likely Causes for Code P0336 #

The causes of P0336 typically revolve around the sensor and its circuit, but can also involve related engine components. Here’s a rundown of the most frequent culprits, ranked by likelihood:

1. Faulty Crankshaft Position Sensor: The sensor itself may have failed due to internal electrical faults, age, or heat damage.
2. Damaged or Corroded Sensor Wiring/Connector: Frayed, pinched, corroded, or loose wiring/connectors can disrupt the CKP sensor signal.
3. Damaged Reluctor Ring: The reluctor (tone) ring mounted on the crankshaft can become damaged, dirty, or misaligned, causing poor sensor readings.
4. ECM/PCM Issues: Rarely, the Engine Control Module itself may be at fault, unable to interpret the sensor signal correctly.
5. Incorrect Sensor Installation: After recent repairs or replacements, the sensor may be misaligned or improperly installed.
6. Oil Leaks or Contamination: Oil or debris on the sensor or reluctor ring can interfere with proper signal transmission.

Step-by-Step Diagnostic Process for P0336 #

Diagnosing P0336 should follow a systematic approach to avoid misdiagnosis and unnecessary part replacement. Here’s a proven workflow:

• 1. Confirm the code: Use a professional-grade scan tool to verify the presence of P0336 and check for related codes (like P0335, P0337, or P0340).
• 2. Visual inspection: Inspect the CKP sensor and its connector for damage, corrosion, or oil contamination. Check for broken or frayed wires along the harness.
• 3. Check sensor alignment and mounting: Ensure the CKP sensor is securely mounted and positioned correctly relative to the reluctor ring.
• 4. Test sensor signal: Using a digital multimeter or oscilloscope, measure the CKP sensor’s output while cranking or running the engine. Compare to OEM specifications.
• 5. Inspect the reluctor ring: Rotate the engine by hand (if possible) and check the reluctor ring for missing teeth, damage, or excessive buildup of debris.
• 6. Check for continuity/shorts: Perform continuity and resistance checks on the CKP sensor wiring from the sensor to the ECM.
• 7. ECM input verification: If all previous steps check out, verify the ECM is receiving a proper signal; substitute a known-good ECM if necessary for further testing.

Possible Repairs for P0336 #

Once the root cause is identified, repairs for P0336 will directly address the faulty component or circuit. Solutions may include:

• Replace the crankshaft position sensor if it is malfunctioning or out of specification.
• Repair or replace damaged wiring and connectors to restore proper electrical continuity and signal integrity.
• Clean or replace the reluctor ring if it is dirty, bent, misaligned, or missing teeth.
• Reseat or properly install the crankshaft position sensor if it was installed incorrectly.
• Clean any oil or debris from sensor and surrounding area to ensure proper sensor operation.
• Replace or reprogram the ECM only if all other causes have been ruled out and ECM failure is confirmed (rare).

Is It Safe to Drive with Code P0336? #

Generally, driving with P0336 is NOT recommended. While the engine might start and run intermittently, loss of accurate crankshaft position information can result in sudden stalling, hard starting, poor drivability, or even complete engine shutdown while driving. This poses a safety risk, especially in traffic or at higher speeds. It is best to address this issue as soon as possible and avoid driving the vehicle until repairs are made.

Vehicles Most Commonly Affected by P0336 #

P0336 is a generic OBD-II code and can affect almost any modern vehicle, but is most frequently reported on models from:

• Chevrolet (Silverado, Malibu, Equinox)
• Ford (F-150, Escape, Focus)
• Honda (Accord, Civic, CR-V)
• Toyota (Camry, Corolla, Tacoma)
• Volkswagen/Audi (Jetta, Passat, A4)
• Chrysler/Dodge/Jeep (Ram, Grand Cherokee, Charger)
• Nissan (Altima, Sentra, Frontier)
• Hyundai/Kia (Sonata, Elantra, Sorento)

These models tend to experience P0336 more frequently due to sensor location, wiring design, or known technical service bulletins (TSBs) addressing this issue.

Common Mistakes & Best Practices with P0336 #

Misdiagnosing P0336 is common, especially when skipping key diagnostic steps. Here’s how to avoid the pitfalls:

• Replacing the CKP sensor without checking wiring, connectors, or the reluctor ring
• Neglecting visual inspection for oil leaks or contamination at the sensor area
• Overlooking related codes that might indicate a broader issue (e.g., camshaft sensor faults)
• Using low-quality aftermarket sensors that may not meet OEM specifications
• Failing to clear the code and retest after repairs
• Not consulting the latest OEM TSBs for known issues or updated repair procedures

Quick FAQ for Code P0336 #

Q: Can a bad crankshaft position sensor cause my car not to start?
A: Yes. If the ECM cannot detect a valid signal from the crankshaft position sensor, it may disable ignition or fuel injection, resulting in a no-start condition.

Q: Is P0336 always caused by a bad sensor?
A: No. While a faulty sensor is a common cause, wiring faults, connector issues, or reluctor ring problems are also frequent culprits. Proper diagnosis is essential before replacing parts.

Q: Will clearing the code fix the problem?
A: Clearing the code may temporarily turn off the check engine light, but unless the underlying issue is repaired, P0336 will return.