Glow Plug Control Module Temperature – Intake Air Heater Temperature Not Plausible
Table of contents
P16A8 GMC Possible Causes
- Faulty Glow Plug Control Module Temperature
- Glow Plug Control Module Temperature harness is open or shorted
- Glow Plug Control Module Temperature circuit poor electrical connection
How do I fix code P16A8 GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P16A8 GMC code
The cost of diagnosing the P16A8 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P16A8 GMC Description
The glow plug control module has the ability to perform internal diagnostics for voltage and output state of the glow plugs. If the difference between the internal temperature of the glow plug control module and the internal temperature of the intake air heater module is greater than 20°C (68°F), this DTC will set. The glow plug control module will send a message to the engine control module (ECM) to set this DTC.