Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2016 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
DTC P1C00 Battery Monitor Module "A" Performance: DTC Detecting Condition
- Immediately at fault recognition
- GENERAL DESCRIPTION < Ref. to DTC P1C00 BATTERY MONITOR MODULE "A" PERFORMANCE , Diagnostic Trouble Code (DTC) Detecting Criteria. >
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode < Ref. to
OPERATION
, Clear Memory Mode. >, and Inspection Mode < Ref. to
PROCEDURE
, Inspection Mode. >.
DIAGNOSTIC PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Check for DTC. < Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) . > |
Is P1C00 displayed in «Present fault»? | Replace the battery sensor. < Ref. to BATTERY SENSOR . > | Even if DTC is detected, it has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.