P16E4 2018 Chevrolet Silverado Code - Sensor Communication Circuit 3 Low Voltage
Quick Answer
The Engine Control Module (ECM) uses the Fuel Rail Pressure (FRP) sensor to constantly adjust the high-pressure fuel pump's feed rate so that the ideal pressure is permanently maintained in the high-pressure section (between the high-pressure fuel pump and the injectors) by means of closed-loop control. Common causes include Low or no fuel, Faulty Fuel Rail Pressure (FRP) Sensor, Fuel Rail Pressure harness is open or shorted. 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
- P16E4 2018 Chevrolet Silverado indicates Sensor Communication Circuit 3 Low Voltage.
- Common causes
- Common causes include Low or no fuel, Faulty Fuel Rail Pressure (FRP) Sensor, Fuel Rail Pressure harness is open or shorted.
- 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 P16E4 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC P16E4 2018 Chevrolet Silverado?
- Low or no fuel
- Faulty Fuel Rail Pressure (FRP) Sensor
- Fuel Rail Pressure harness is open or shorted
- Fuel Rail Pressure circuit poor electrical connection
- Faulty Fuel Pump
How to Fix the DTC P16E4 2018 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 P16E4 2018 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.
Need more information about the P16E4 2018 Chevrolet Silverado code?
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Frequently Asked Questions about P16E4 2018 Chevrolet Silverado Code
1. What does the OBDII code P16E4 mean on a 2018 Chevrolet Silverado?
P16E4 indicates a "Sensor Communication Circuit 3 Low Voltage" issue, meaning the vehicle's control module has detected a low voltage condition in the third sensor communication circuit.
2. What are the common symptoms of code P16E4 on a 2018 Chevrolet Silverado?
Common symptoms include an illuminated check engine light, reduced engine performance, erratic sensor readings, or possible difficulty starting the vehicle.
3. What causes the P16E4 code to appear on a 2018 Chevrolet Silverado?
Potential causes include a faulty sensor, damaged wiring or connectors in the circuit, a failing control module, or voltage irregularities in the circuit.
4. How can I diagnose the P16E4 code on my Silverado?
Start by scanning the vehicle with an OBDII scanner, then inspect the related sensor and its wiring harness for damage, loose connections, or corrosion. Measure the voltage in the circuit to confirm if it’s below the specified range.
5. Can a low battery cause the P16E4 code on a Chevrolet Silverado?
Yes, a weak or failing battery can lead to voltage irregularities that may trigger the P16E4 code.
6. What sensors are typically involved with the P16E4 code on a Silverado?
The specific sensor varies, but it often pertains to engine or transmission-related sensors, such as the crankshaft position sensor or camshaft position sensor.
7. Is it safe to drive my 2018 Chevrolet Silverado with a P16E4 code?
Driving with the P16E4 code might lead to reduced performance or additional damage to your vehicle. It’s recommended to address the issue promptly.
8. How do I fix the P16E4 code on a 2018 Chevrolet Silverado?
Repairs may involve replacing a faulty sensor, repairing or replacing damaged wiring or connectors, and ensuring the control module is functioning properly. Always clear the code and retest after repairs.
9. How much does it cost to fix the P16E4 code on a Silverado?
The cost depends on the root cause. Replacing a sensor may cost $100-$300, while wiring repairs or control module replacements can range higher depending on labor and parts.
10. Can I reset the P16E4 code without fixing the issue?
You can clear the code with an OBDII scanner, but if the underlying issue isn’t resolved, the code will likely reappear.
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