Table of Contents
- 1 P0336 Code Definition
- 2 What does the P0336 Code Mean?
- 3 Symptoms Of P0336 Code
- 4 Causes of P0336 Code
- 5 How to Diagnose the P0336 Code?
- 6 Common P0336 Diagnosis Mistakes
- 7 How Serious is the P0336 Code?
- 8 What repairs can fix the P0336 Code?
- 9 How Much Does It Cost To Fix Code P0336?
- 10 Frequently Asked Questions
The crankshaft position sensor of a vehicle is responsible for gauging the location and rotary motion of the crankshaft. This is accomplished by the variable reluctance type sensor, which identifies alterations in magnetic flux between the low and high points of a specialized “reluctor wheel” affixed to the crankshaft. The P0336 code indicates an issue with the crankshaft position sensor.
The engine control module (ECM) employs the data provided by the crankshaft position (CKP) sensor to arrange ignition timing and, in certain instances, regulate the fuel injection rate.
Additionally, this data is helpful in spotting cylinder misfires and managing the camshaft position actuator if it is present. Any disruption to this signal triggers the activation of the P0336 code. This guide describes the P0336 code meaning, causes, and how to fix it.
P0336 Code Definition
P0336 Code – Crankshaft Position Sensor A Circuit Range/Performance
What does the P0336 Code Mean?
The P0336 code indicates that your engine control module (ECM) detects a problem with the signal coming from the crankshaft position sensor A or its circuit.
The role of the crankshaft position sensor involves measuring the crankshaft’s rotary motion, overseeing the synchronization of engine valves to facilitate piston functionality, and assessing overall engine performance.
Using the data of the camshaft position sensor, the ECM manages the fuel injection rate and ignition timing as needed. When the coordination between the crankshaft position sensor and ECM is optimal, they collectively govern emission efficiency and power generation, ensuring the vehicle is reliable and offers a smooth driving experience.
The CKP sensor consists of two components: a stationary sensor and a moving disc known as the reluctor. Typically, these sensors feature three wires— a signal wire, a ground wire, and a voltage wire. This trio of wires collaborates to provide the ECM with a signal indicating the speed of the crankshaft.
By utilizing this input from the camshaft position sensor, the ECM is empowered to decipher the required adjustments for fuel injection and ignition timing. If the correct signal from the crankshaft position sensor is interrupted, preventing the ECM from making essential adaptations, it will store the DTC P0336.
Symptoms Of P0336 Code
- Random or intermittent engine misfire
- Erratic idle
- Illuminated check engine light
- Hard starting or no starting conditions
- Poor engine performance
- Poor fuel economy
- Engine stalling
- Engine vibration
- Erratic RPM readings
Causes of P0336 Code
The following are the most common causes of the P0336 code:
- Fractured or broken teeth of the reluctor wheel
- Magnet shavings of the crankshaft position sensor might have become lodged on either the reluctor wheel or the sensor.
- Poor alignment of the crankshaft position sensor with the tone ring or crankshaft position wheel.
- A potentially malfunctioning crankshaft position sensor connector due to breakage or corrosion.
- Poor electrical connections
- Damaged wires or insulation connected to the crankshaft position sensor
- An issue with the timing belt or chain
- Unnecessary harmonic imbalances or extreme engine vibrations
- Damaged timing gear or tone or ring
- Faulty camshaft position sensor
- A large air gap between the tone ring and the crankshaft position sensor
- Engine misfires
- An issue with the ECM
- Bad crankshaft position sensor
How to Diagnose the P0336 Code?
When your ECM triggers the P0336 code, it is very important to stop driving and fix it promptly. To diagnose the P0336 code, follow the below-given steps:
- Retrieve all saved error codes from the ECM by utilizing an OBD-II scan tool.
- Perform a visual examination of the crankshaft position sensor to identify evident signs of damage.
- Examine the wires connected to the crankshaft position sensor for potential issues such as breaks, scorching, or shorts. Ensure adequate separation between spark plug wires and sensor wires.
- Check the connectors for corrosion, fractures, or loose connections.
- Check the alignment between the crankshaft position sensor and the crankshaft position wheel/tone ring.
- Examine the reluctor wheel for indications of damage, ensuring it is securely affixed to the crankshaft.
- Evaluate the insulation of the crankshaft harness wiring for any impairment.
- Verify the appropriate gap between the upper part of the crankshaft position sensor and the reluctor wheel.
- Utilize a scan tool to gauge RPM readings of the crankshaft, particularly during the engine startup.
- If you are unable to read the RPM, analyze the crankshaft position sensor signal by using a scan tool.
- Evaluate the camshaft position sensor and its wiring. Given the interdependency of the camshaft and crankshaft, a bad camshaft sensor or its wiring may impact the crankshaft position sensor’s performance.
- Check the resistance in both the crankshaft position sensor wires and the sensor itself by utilizing a volt-ohm meter (VOM). The resistance reading must be according to the reading written in the vehicle service manual.
- Address any diagnosed engine misfires by conducting thorough diagnosis and necessary repairs.
- After performing repairs, erase the error codes and execute a test to monitor their potential reappearance.
Common P0336 Diagnosis Mistakes
The following are the most common mistakes when a mechanic diagnoses the P0336 trouble code:
- Premature replacement of the crankshaft position sensor without adequately exploring alternative potential causes.
- Overlooking the wiring or connectivity issues. Damaged wires or connectors can mimic symptoms akin to a failing component.
- Overlooking the misalignment of crankshaft timing, possibly stemming from a defective timing belt or timing chain.
- Not clearing the trouble codes after repairing the issues.
How Serious is the P0336 Code?
The P0336 code is a severe trouble code. It is important to address this trouble code as soon as possible. Ignoring this concern can swiftly trigger unforeseen complications.
If you don’t fix this code on time, your car might have trouble starting, and it could happen unexpectedly, even in an unsafe place. Plus, not fixing it could damage other important parts of your car’s engine, which could end up costing you a lot more money.
What repairs can fix the P0336 Code?
Perform one or more of the following repairs or replacements to fix the P0336 code:
- Repair or replace the corroded or damaged crankshaft position sensor connector
- Replace the faulty reluctor wheel
- Repair or replace the damaged crankshaft position sensor wiring
- Replace or repair the damaged crankshaft position sensor wiring harness
- Replace the bad crankshaft position sensor
- Fix the main cause of engine misfiring
- Replace the damaged timing belt or timing chain
- Replace the faulty camshaft position sensor
- Reprogram or replace the ECM
- Ensure the proper alignment between the crankshaft position sensor and the camshaft position sensor
- Clear the trouble codes and perform a test drive
How Much Does It Cost To Fix Code P0336?
The cost to repair the P0336 code, on average varies according to the underlying issue. Following your assessment, you might have to undertake one of these actions. We’ve provided you with the typical cost for each task, factoring in both parts and labor. Nevertheless, if you possess the skills to complete the repairs independently, your expenses could be significantly lower.
- Crankshaft position sensor replacement: $170 to $380
- Timing belt replacement: $900 to $3200
- Camshaft position sensor replacement: $170 to $470
- Wiring repair: $30 to $570
- Reluctor ring replacement: $740 to $2,600
Frequently Asked Questions
What is the code P0336 on a Chevy Silverado?
The P0336 code on a Chevy Silverado indicates that your Engine Control Module (ECM) detects an incorrect voltage output from the crankshaft position sensor. This discrepancy may impact vital aspects like fuel injection and ignition timing. Swift repair is essential to prevent potential internal engine damage from occurring.
Is the P0336 code serious?
Yes, the P0336 code demands serious attention and shouldn’t be underestimated. Despite the car appearing to operate fine, ignoring it is unwise. There are two key reasons for this caution. Firstly, neglecting the issue could potentially escalate into more severe engine problems, leading to higher repair costs. Secondly, the car’s overall performance might start deteriorating, jeopardizing your safe journey back home.
How can I tell if your crankshaft position sensor is bad?
It’s crucial to be attentive to error codes and to stay alert for associated symptoms. A malfunctioning crankshaft position sensor commonly leads to difficulties in starting the engine, poor fuel economy, misfiring, and a decline in overall performance. This can also lead to rough engine operation or challenges in acceleration. Additionally, fuel efficiency may noticeably decrease.
Can I drive my car with a P0336 code?
Yes, technically, you can drive with P0336, but it is not recommended. Even if your vehicle maintains its normal operation and there are no immediate performance issues, assuming it’s safe to continue driving would be a mistake. Such problems can rapidly evolve, possibly leaving you stuck. Moreover, driving with this code may lead to severe engine damage.
Can I drive with a bad crankshaft position sensor?
No, it is not suggested to drive your car with a bad crankshaft position sensor. It’s important to emphasize that replacing the faulty crankshaft position sensor should be a top priority to avert potential internal engine damage. When it goes bad, it starts to send the wrong data to the ECM. This wrong data may disrupt ignition timing and fuel injection rate. This not only results in a rough driving experience but also increases the risk of stalling or complete failure of your engine.
What is the function of the crankshaft position sensor?
The main function of the crankshaft position sensor is to measure the rotational speed and location of the crankshaft. It sends this information to the engine control module (ECM), which uses it to control the fuel injection rate and ignition timing.