P2E84 — Battery Charger B Input Voltage Sensor Circuit Range/Performance

What Does P2E84 Mean?

P2E84 is a diagnostic trouble code indicating: Battery Charger B Input Voltage Sensor Circuit Range/Performance. This code relates to the vehicle systems system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P2E84

⚠️ Check Engine Light (MIL) illuminated
⚠️ Battery Charger B Input Voltage Sensor not operating within expected parameters
⚠️ Reduced efficiency or performance of related system
⚠️ System warning light illuminated

Common Causes

🔍 Battery Charger B Input Voltage Sensor degraded or contaminated
🔍 Mechanical wear or binding in Battery Charger B Input Voltage Sensor
🔍 Incorrect Battery Charger B Input Voltage Sensor installed (wrong part number)
🔍 Related system mechanical issue affecting Battery Charger B Input Voltage Sensor readings

Frequently Asked Questions

What does P2E84 mean?

P2E84 indicates: Battery Charger B Input Voltage Sensor Circuit Range/Performance. The vehicle's computer has detected that the Battery Charger B Input Voltage Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P2E84?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P2E84 for extended periods may cause additional problems.

How much does it cost to fix P2E84?

Repair costs for P2E84 typically range from $50 to $250, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and clean Battery Charger B Input Voltage Sensor
🔧 Replace degraded Battery Charger B Input Voltage Sensor
🔧 Check for related mechanical issues affecting readings

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P2E84: Battery Charger B Input Voltage Sensor Circuit Range/Performance