P16AF Chevrolet Code - Engine Controls Ignition Relay Feedback Circuit 2 Low Voltage
Quick Answer
There are 3 ignition voltage circuits supplied to the Engine Control Module (ECM). Common causes include Faulty Engine Controls Ignition Relay, Engine Controls Ignition Relay harness is open or shorted, Engine Controls Ignition Relay 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
- P16AF Chevrolet indicates Engine Controls Ignition Relay Feedback Circuit 2 Low Voltage.
- Common causes
- Common causes include Faulty Engine Controls Ignition Relay, Engine Controls Ignition Relay harness is open or shorted, Engine Controls Ignition Relay 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 P16AF Chevrolet Description
What are the Possible Causes of the DTC P16AF Chevrolet?
- Faulty Engine Controls Ignition Relay
- Engine Controls Ignition Relay harness is open or shorted
- Engine Controls Ignition Relay circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P16AF Chevrolet?
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 P16AF Chevrolet 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 P16AF Chevrolet Code
What does OBDII code P16AF mean on a Chevrolet?
Code P16AF indicates an issue with the "Engine Controls Ignition Relay Feedback Circuit 2," specifically detecting low voltage in the circuit.
What are common symptoms of code P16AF in a Chevrolet?
Common symptoms include difficulty starting the engine, intermittent stalling, reduced engine performance, and the Check Engine Light being illuminated.
What causes code P16AF on a Chevrolet?
Potential causes include a faulty ignition relay, damaged or corroded wiring in the feedback circuit, a weak battery, or a malfunctioning Engine Control Module (ECM).
Can a bad ignition relay trigger code P16AF?
Yes, a failing or stuck ignition relay can cause low voltage in the ignition relay feedback circuit and trigger code P16AF.
How do I diagnose code P16AF on my Chevrolet?
Start by checking the ignition relay, inspecting circuit wiring for damage or corrosion, testing the battery voltage, and verifying the ECM's functionality.
Can I drive my Chevrolet with code P16AF?
Driving with code P16AF may lead to engine performance issues or potential stalling, so it’s recommended to address the issue promptly.
How do I fix code P16AF on a Chevrolet?
Repairs may include replacing the ignition relay, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the ECM if necessary.
Does code P16AF require professional repair?
While some fixes, like replacing a relay, are DIY-friendly, a professional diagnostic may be needed for complex issues involving the ECM or circuit repairs.
Will clearing the code fix P16AF permanently?
No, clearing the code resets the Check Engine Light but does not resolve the underlying issue. The problem must be properly diagnosed and repaired.
Is a weak battery linked to code P16AF on a Chevrolet?
Yes, a weak or failing battery can cause low voltage in the ignition relay feedback circuit, potentially triggering code P16AF.
Discuss the causes and fixes for P16AF Chevrolet OBDII Code
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