AutoCodes – Generic – P16AE

P16AE Code - Glow Plug Control Module Temperature Sensor Circuit High Voltage

Quick Answer

The Glow Plug Control Module (GPCM) has the ability to perform internal diagnostics for the temperature sensor circuit. Common causes include Faulty Glow Plug Control Module (GPCM), Glow Plug Control Module harness is open or shorted, Glow Plug Control Module 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: P16AE indicates Glow Plug Control Module Temperature Sensor Circuit High Voltage.
Common causes: Common causes include Faulty Glow Plug Control Module (GPCM), Glow Plug Control Module harness is open or shorted, Glow Plug Control Module 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 5,234

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 01, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P16AE Description

The Glow Plug Control Module (GPCM) has the ability to perform internal diagnostics for the temperature sensor circuit. The GPCM monitors the internal temperature sensor voltage and if the voltage is less than 0.21 V or greater than 4.94 V. The GPCM will send a message to the Engine Control Module (ECM) to set the appropriate Diagnostic Trouble Code (DTC). A DTC is detected when one of the GPCM temperature sensors voltage falls outside the calibrated threshold for greater than 1.3 s.

OBDII Code P16AE - Glow Plug Control Module Temperature Sensor Circuit High Voltage - AutoCodes.com — P16AE Code - Glow Plug Control Module Temperature Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P16AE?

Faulty Glow Plug Control Module (GPCM)
Glow Plug Control Module harness is open or shorted
Glow Plug Control Module circuit poor electrical connection

How to Fix the DTC P16AE?

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 P16AE 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 P16AE code?

Need more information on how to fix the P16AE code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16AE code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P16AE Buick — Glow Plug Control Module Temperature Sensor Circuit High Voltage
P16AE Cadillac — Glow Plug Control Module Temperature Sensor Circuit High Voltage
P16AE Chevrolet — Glow Plug Control Module Temperature Sensor Circuit High Voltage
P16AE GMC — Glow Plug Control Module Temperature Sensor Circuit High Voltage

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 P16AE Code

1. What are the common symptoms of OBDII code P16AE (Glow Plug Control Module Temperature Sensor Circuit High Voltage)?

- Common symptoms include poor engine performance, rough idling, reduced fuel efficiency, and an illuminated Check Engine Light.

2. What are the possible causes of OBDII code P16AE?

- The code P16AE can be caused by a faulty glow plug control module temperature sensor, damaged wiring or connectors in the circuit, or a malfunctioning glow plug control module.

3. How can I diagnose the cause of OBDII code P16AE?

- To diagnose the cause of P16AE, you can use a scan tool to read the code and perform further testing on the glow plug control module temperature sensor, wiring, and connectors for any issues.

4. Can I drive my vehicle with OBDII code P16AE?

- It is not recommended to drive your vehicle with code P16AE, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

5. How can I repair OBDII code P16AE?

- Repairing code P16AE involves inspecting and potentially replacing the glow plug control module temperature sensor, repairing any damaged wiring or connectors, or replacing the glow plug control module if necessary.

6. Can a DIY enthusiast fix OBDII code P16AE?

- Depending on your experience and tools available, a DIY enthusiast may be able to address code P16AE by following repair guides and being cautious when dealing with electrical components.

7. Will clearing the OBDII code P16AE make it go away permanently?

- Clearing the code P16AE may temporarily turn off the Check Engine Light, but if the underlying issue is not fixed, the code is likely to reappear once the problem is detected again.

8. How much does it cost to repair OBDII code P16AE at a mechanic?

- The cost of repairing code P16AE can vary depending on the specific cause, labor rates, and parts needed. It is advisable to get quotes from different mechanics for an accurate estimate.

9. Is OBDII code P16AE a serious issue?

- While code P16AE may not cause immediate breakdown, ignoring the issue can lead to poor engine performance and potential long-term damage. It is important to address the problem promptly.

10. Can extreme weather conditions affect OBDII code P16AE?

- Extreme weather conditions, especially cold temperatures, can exacerbate issues related to glow plug control modules and sensors, potentially triggering code P16AE.