AutoCodesGeneric – P16BF

P16BF Code - Starter Cut Relay STRLY Circuit Malfunction

Quick Answer

The Powertrain Control Module (PCM) compares the signal of the drive command to the starter and the return signal from the starter cut relay. Common causes include Faulty Starter Cut Relay, Starter Cut Relay harness is open or shorted, Starter Cut 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
P16BF indicates Starter Cut Relay STRLY Circuit Malfunction.
Common causes
Common causes include Faulty Starter Cut Relay, Starter Cut Relay harness is open or shorted, Starter Cut 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.
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Code Popularity 8,315
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 10, 2020
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Code P16BF Description

The Powertrain Control Module (PCM) compares the signal of the drive command to the starter and the return signal from the starter cut relay. When the signal of the drive command to the starter and the return signal from the starter cut relay do not coincide for a set time or more, the PCM detects a malfunction and a DTC is stored.
OBDII Code P16BF - Starter Cut Relay STRLY Circuit Malfunction - AutoCodes.com
P16BF Code - Starter Cut Relay STRLY Circuit Malfunction

What are the Possible Causes of the DTC P16BF?

  • Faulty Starter Cut Relay
  • Starter Cut Relay harness is open or shorted
  • Starter Cut Relay circuit poor electrical connection

How to Fix the DTC P16BF?

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 P16BF 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 P16BF code?

Need more information on how to fix the P16BF code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16BF code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • P16BF Acura — Starter Cut Relay STRLY Circuit Malfunction
  • P16BF Buick — Engine Controls Ignition Relay Feedback Circuit 3 High Voltage
  • P16BF Cadillac — Engine Controls Ignition Relay Feedback Circuit 3 High Voltage
  • P16BF Chevrolet — Engine Controls Ignition Relay Feedback Circuit 3 High Voltage
  • P16BF GMC — Engine Controls Ignition Relay Feedback Circuit 3 High Voltage
  • P16BF Honda — Starter Cut Relay STRLY Circuit Malfunction
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P16BF Code

1. What does the OBDII code P16BF mean?

P16BF indicates a malfunction in the Starter Cut Relay (STRLY) circuit, which is responsible for interrupting the starter circuit under specific conditions.

2. What are the common symptoms of code P16BF?

Symptoms may include difficulty starting the engine, the starter not engaging, the engine stalling, or the Check Engine Light illuminating.

3. What causes the P16BF code to appear?

Common causes include a faulty starter cut relay, damaged wiring or connectors in the STRLY circuit, a failed control module, or electrical interference.

4. Can I drive with the P16BF code active?

Driving with a P16BF code may result in intermittent starting issues. It’s best to address the issue promptly to avoid being stranded.

5. How is the P16BF code diagnosed?

A technician will use a scan tool to verify the code, inspect the starter cut relay and associated wiring, and test the circuit for continuity or short circuits.

6. How do I fix the P16BF code?

Repairs may involve replacing a faulty starter cut relay, repairing damaged wiring or connectors, or reprogramming/repairing the control module if necessary.

7. What tools are needed to troubleshoot the P16BF code?

A diagnostic scan tool, multimeter, and wiring diagrams for the specific vehicle are typically required for troubleshooting.

8. Can a weak battery cause the P16BF code?

Yes, a weak or failing battery can cause intermittent issues in the STRLY circuit, potentially triggering the code.

9. How much does it cost to repair the P16BF code?

Repair costs vary but typically range from $50 to $200 for relay replacement or wiring repairs. Control module issues may increase costs significantly.

10. Will clearing the code fix the P16BF issue?

Clearing the code may temporarily remove the Check Engine Light, but the underlying issue must be resolved to prevent the code from returning.

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