P16AD Code - Glow Plug Control Module Temperature Sensor Circuit Low 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
- P16AD indicates Glow Plug Control Module Temperature Sensor Circuit Low 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.
Code P16AD Description
What are the Possible Causes of the DTC P16AD?
- 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 P16AD?
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 P16AD 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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Information for Specific Makes
- P16AD Buick — Glow Plug Control Module Temperature Sensor Circuit Low Voltage
- P16AD Cadillac — Glow Plug Control Module Temperature Sensor Circuit Low Voltage
- P16AD Chevrolet — Glow Plug Control Module Temperature Sensor Circuit Low Voltage
- P16AD GMC — Glow Plug Control Module Temperature Sensor Circuit Low Voltage
Frequently Asked Questions about P16AD Code
1. What are the common symptoms of OBDII code P16AD (Glow Plug Control Module Temperature Sensor Circuit Low Voltage)?
- Common symptoms include hard starting, rough idling, reduced engine performance, and the illumination of the check engine light.
2. What are the possible causes of OBDII code P16AD?
- Possible causes include a faulty glow plug control module, a defective temperature sensor, damaged wiring or connectors in the circuit, or a software issue.
3. How can I diagnose the cause of OBDII code P16AD?
- Diagnose by performing a visual inspection of wiring and connectors, testing the glow plug control module and temperature sensor, and using a scan tool to monitor sensor data.
4. Can I drive my vehicle with OBDII code P16AD active?
- It is not recommended to drive with this code active as it can lead to poor engine performance and potential damage if left unresolved.
5. How can I repair OBDII code P16AD?
- Repair involves addressing the root cause, such as replacing a faulty glow plug control module, temperature sensor, or repairing damaged wiring or connectors in the circuit.
6. Can a DIY enthusiast fix OBDII code P16AD?
- Depending on the level of expertise, a DIY enthusiast may be able to address this code by following diagnostic procedures and replacing components if needed.
7. Will resetting the OBDII code P16AD make it go away permanently?
- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not fixed, the code is likely to reappear after driving cycles.
8. How critical is it to address OBDII code P16AD promptly?
- It is important to address the code promptly to prevent potential engine damage, ensure optimal performance, and maintain fuel efficiency.
9. Can extreme weather conditions affect the occurrence of OBDII code P16AD?
- Yes, extreme temperatures can impact the performance of glow plug systems, which may lead to issues related to the temperature sensor circuit.
10. Is it possible for a loose electrical connection to trigger OBDII code P16AD?
- Yes, a loose or corroded electrical connection in the glow plug control module temperature sensor circuit can trigger this code.
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