P2618 2015 GMC Sierra 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 2015 GMC Sierra 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 2015 GMC Sierra 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 2015 GMC Sierra?
- 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 2015 GMC Sierra?
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 2015 GMC Sierra 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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Frequently Asked Questions about P2618 2015 GMC Sierra Code
1. What does the OBDII code P2618 mean on a 2015 GMC Sierra?
P2618 indicates a low voltage issue in the crankshaft position signal output circuit, which affects the engine's ability to monitor and time the crankshaft's position properly.
2. What are the common symptoms of a P2618 code?
Symptoms may include difficulty starting the engine, poor engine performance, stalling, rough idling, or the check engine light being illuminated.
3. What causes the P2618 code on a GMC Sierra?
Common causes include a faulty crankshaft position sensor, damaged wiring or connectors in the circuit, a failing engine control module (ECM), or low battery voltage.
4. Can I drive my 2015 GMC Sierra with a P2618 code?
Driving with this code is not recommended, as it can lead to engine misfires, stalling, or further damage to engine components if not addressed promptly.
5. How do I fix the P2618 code on my GMC Sierra?
Repairs may involve replacing the crankshaft position sensor, repairing or replacing damaged wiring or connectors, ensuring proper battery voltage, or reprogramming/replacing the ECM if necessary.
6. How do I diagnose the cause of a P2618 code?
Start by inspecting the crankshaft position sensor and its wiring for damage or corrosion. Use a multimeter to check for proper voltage and continuity in the circuit. If the sensor and wiring are fine, test the ECM.
7. What tools do I need to troubleshoot a P2618 code?
Common tools include an OBDII scanner, a digital multimeter, and possibly a wiring diagram for the crankshaft position sensor circuit.
8. How much does it cost to fix a P2618 code on a 2015 GMC Sierra?
Repair costs can vary, but replacing a crankshaft position sensor typically costs $100–$250, while more extensive repairs like ECM replacement can exceed $500.
9. Could a dead battery cause the P2618 code?
Yes, a dead or weak battery can contribute to low voltage in the crankshaft position signal circuit, triggering the P2618 code.
10. Does the P2618 code always mean the crankshaft position sensor is bad?
No, the issue could also stem from wiring problems, a failing ECM, or improper voltage, so a thorough diagnosis is essential.
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