P067A 2016 Chevrolet Silverado Code - Cylinder 4 Glow Plug Control Circuit Low Voltage
Quick Answer
n the diesel engine, air alone is compressed in the cylinder. Common causes include Faulty cylinder #4 glow plug, Cylinder #4 glow plug harness is open or shorted, Cylinder #4 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
- P067A 2016 Chevrolet Silverado indicates Cylinder 4 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty cylinder #4 glow plug, Cylinder #4 glow plug harness is open or shorted, Cylinder #4 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 P067A 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 P067A 2016 Chevrolet Silverado?
- Faulty cylinder #4 glow plug
- Cylinder #4 glow plug harness is open or shorted
- Cylinder #4 glow plug circuit poor electrical connection
- Faulty Glow Plug Control Module
How to Fix the DTC P067A 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 P067A 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 P067A 2016 Chevrolet Silverado Code
What does the OBD-II code P067A mean on a 2016 Chevrolet Silverado?
Code P067A indicates a low voltage issue in the glow plug control circuit for cylinder 4, which is part of the diesel engine's starting system.
What are common symptoms of code P067A in a 2016 Chevrolet Silverado?
Common symptoms include difficulty starting the engine in cold weather, rough idling, decreased fuel efficiency, and an illuminated check engine light.
What causes the P067A code to appear on a 2016 Chevrolet Silverado?
Causes may include a faulty glow plug for cylinder 4, a damaged glow plug control module, corroded or loose electrical connections, or damaged wiring in the circuit.
Can I drive my 2016 Chevrolet Silverado with a P067A code?
While the truck may still run, driving with this code can lead to poor cold-start performance and potential long-term engine damage if not addressed.
How do I diagnose the P067A code on a 2016 Chevrolet Silverado?
Start by inspecting the glow plug for cylinder 4, checking for corrosion or damage in the wiring and connectors, and testing the glow plug control module with a multimeter.
How much does it cost to repair the P067A code on a 2016 Chevrolet Silverado?
Repair costs vary but generally range from $100 to $300, depending on whether the glow plug or control module needs replacement and labor charges.
Can a bad glow plug cause the P067A code on a 2016 Chevrolet Silverado?
Yes, a faulty glow plug for cylinder 4 can trigger this code by causing a low voltage reading in the control circuit.
How do I reset the P067A code after fixing the issue on a 2016 Chevrolet Silverado?
After repairs, use an OBD-II scanner to clear the code. Ensure the issue is fully resolved, as the code may return if the problem persists.
What tools are needed to fix the P067A code on a 2016 Chevrolet Silverado?
Essential tools include a digital multimeter to test voltage, an OBD-II scanner to diagnose and clear the code, and basic hand tools for replacing the glow plug or repairing wiring.
Can extreme cold weather trigger the P067A code on a 2016 Chevrolet Silverado?
Cold weather can exacerbate problems with the glow plug system, but the code itself usually indicates an underlying voltage or component issue in the circuit.
Discuss the causes and fixes for P067A 2016 Chevrolet Silverado OBDII Code
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