P066F 2016 Chevrolet Silverado Code - Cylinder 3 Glow Plug Control Circuit High Voltage
Quick Answer
n the diesel engine, air alone is compressed in the cylinder. Common causes include Faulty cylinder #3 glow plug, Cylinder #3 glow plug harness is open or shorted, Cylinder #3 glow plug 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
- P066F 2016 Chevrolet Silverado indicates Cylinder 3 Glow Plug Control Circuit High Voltage.
- Common causes
- Common causes include Faulty cylinder #3 glow plug, Cylinder #3 glow plug harness is open or shorted, Cylinder #3 glow plug 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 P066F 2016 Chevrolet Silverado Description
Control of the glow plugs is accomplished by the Glow Plug Control Module. The nominal voltage for the glow plugs is 5.4 volts. When the ignition is turned On, the Glow Plug Control Module applies 7.2 V for 2.2 s, then 5.7 V for 0.8 s, and then 5.4 V until 1200°C (2192°F) is reached. The maximum voltage of the system is 10 V. While the engine is running the voltage will vary between 4.7 - 10 V when in closed loop control to maintain a glow plug temperature that ranges from 1150° - 1180°C (2102° - 2156°F). The temperature and the power consumption are controlled between the Engine Control Module (ECM) and the Glow Plug Control Module within a wide range to suit the engine's pre-heating requirements. Each glow plug is energized individually. This capability yields more optimum heat times for the glow plugs, thus pre - glow times can be kept to a minimum for a short wait to crank times and maximum glow plug durability.
What are the Possible Causes of the DTC P066F 2016 Chevrolet Silverado?
- Faulty cylinder #3 glow plug
- Cylinder #3 glow plug harness is open or shorted
- Cylinder #3 glow plug circuit poor electrical connection
- Faulty Glow Plug Control Module
How to Fix the DTC P066F 2016 Chevrolet Silverado?
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 P066F 2016 Chevrolet Silverado 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 P066F 2016 Chevrolet Silverado Code
What does the OBDII code P066F mean for a 2016 Chevrolet Silverado?
P066F indicates a high voltage issue in the glow plug control circuit for cylinder 3, which may affect the engine's cold start performance.
What are the symptoms of code P066F in a 2016 Chevrolet Silverado?
Symptoms may include difficulty starting the engine in cold weather, rough idling, reduced fuel efficiency, and an illuminated check engine light.
What causes the P066F code on a 2016 Chevrolet Silverado?
Common causes include a faulty cylinder 3 glow plug, damaged wiring or connectors, or a malfunctioning glow plug control module.
Can I drive my 2016 Chevrolet Silverado with code P066F?
Driving with this code may be possible, but it could lead to poor performance, especially in cold weather, and may cause further engine issues over time.
How do you diagnose the P066F code?
Diagnosis involves inspecting the glow plug for cylinder 3, testing the wiring and connectors for continuity or damage, and checking the function of the glow plug control module.
How do you fix code P066F on a 2016 Chevrolet Silverado?
Repairs may include replacing the faulty cylinder 3 glow plug, repairing damaged wiring, or replacing the glow plug control module if necessary.
What tools are needed to fix the P066F code?
You may need a multimeter, OBDII scanner, and basic hand tools to diagnose and repair the issue.
What is the cost to repair the P066F code?
Repair costs vary but may range from $100 to $300, depending on whether the glow plug, wiring, or control module needs replacement.
Can a bad glow plug cause long-term damage?
Yes, a malfunctioning glow plug can lead to starting issues and potential damage to the engine's cylinders or other components over time.
How can I prevent the P066F code from occurring?
Regular maintenance, including checking the glow plugs and inspecting wiring for wear, can help prevent this code from appearing.
Discuss the causes and fixes for P066F 2016 Chevrolet Silverado OBDII Code
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