Restraints Deployment Communication Circuit
Table of contents
P166A MERCURY Possible Causes
- IES circuit open
- IES circuit short to ground
- IES circuit short to voltage
How do I fix code P166A MERCURY?
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 P166A MERCURY code
The cost of diagnosing the P166A MERCURY 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)
P166A MERCURY Description
This Diagnostic Trouble Code (DTC) sets when the Powertrain Control Module (PCM) detects an open or short in the IES circuit.