P2618 GMC Code - Crankshaft Position Signal Output Circuit Low Voltage
Quick Answer
The Crankshaft Position Sensor is also known as the crank position sensor is an electronic device used in an engine to record the rate at which the crankshaft is spinning. Common causes include Faulty Crankshaft Position Sensor, Crankshaft Position Sensor harness is open or shorted, Crankshaft Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P2618 GMC indicates Crankshaft Position Signal Output Circuit Low Voltage.
- Common causes
- Common causes include Faulty Crankshaft Position Sensor, Crankshaft Position Sensor harness is open or shorted, Crankshaft Position Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P2618 GMC Description
When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field causes the voltage from the sensor to change.
The Diagnostic Trouble Code (DTC) will be set when the Crankshaft Position Signal Output Circuit is short to ground or open for greater than 5 s.
What are the Possible Causes of the DTC P2618 GMC?
- Faulty Crankshaft Position Sensor
- Crankshaft Position Sensor harness is open or shorted
- Crankshaft Position Sensor circuit poor electrical connection
How to Fix the DTC P2618 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2618 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific GMC Models
- P2618 2014 GMC Sierra — Crankshaft Position Signal Output Circuit Low Voltage
- P2618 2015 GMC Sierra — Crankshaft Position Signal Output Circuit Low Voltage
- P2618 2016 GMC Sierra — Crankshaft Position Signal Output Circuit Low Voltage
- P2618 2017 GMC Sierra — Crankshaft Position Signal Output Circuit Low Voltage
- P2618 2018 GMC Sierra — Crankshaft Position Signal Output Circuit Low Voltage
Frequently Asked Questions about P2618 GMC Code
1. What are the common symptoms of OBDII code P2618 GMC (Crankshaft Position Signal Output Circuit Low Voltage)?
The common symptoms of this code may include engine stalling, rough idling, poor acceleration, and difficulty starting the vehicle.
2. What are the possible causes of OBDII code P2618 GMC?
Potential causes of this code include a faulty crankshaft position sensor, damaged wiring or connectors in the circuit, low engine oil level, or a problem with the engine control module (ECM).
3. How can I diagnose the issue related to OBDII code P2618 GMC?
Diagnosing this code typically involves using a scan tool to read the code, checking the crankshaft position sensor and its wiring, testing the voltage in the circuit, and inspecting the ECM for any faults.
4. Can I continue driving my vehicle with OBDII code P2618 GMC?
It is not recommended to drive your vehicle with this code present, as it can lead to further damage to the engine and other components. It is best to address the issue promptly.
5. How can I repair OBDII code P2618 GMC?
Repairing this code may involve replacing the crankshaft position sensor, repairing or replacing damaged wiring or connectors, ensuring the engine oil level is correct, and resetting the ECM after completing the repairs.
6. Will resetting the ECM clear OBDII code P2618 GMC?
Resetting the ECM may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear once the problem is detected again.
7. Can a DIY enthusiast fix OBDII code P2618 GMC at home?
While some experienced DIY enthusiasts may be able to diagnose and repair this code at home, it is recommended to seek professional help for accurate diagnosis and proper repair to avoid further complications.
8. Is OBDII code P2618 GMC a serious issue?
OBDII code P2618 GMC can lead to potential drivability issues and engine damage if left unattended for an extended period. It is best to address the issue promptly to prevent further problems.
9. How much does it typically cost to repair OBDII code P2618 GMC?
The cost of repairing this code can vary depending on the root cause of the issue, the labor rates of the repair shop, and the cost of any necessary parts. It is advisable to obtain quotes from different mechanics for an accurate estimate.
10. Can a bad battery cause OBDII code P2618 GMC to appear?
While a bad battery can potentially cause electrical issues in a vehicle, OBDII code P2618 GMC is more commonly associated with problems related to the crankshaft position sensor, wiring, or ECM rather than the battery.
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