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Code P14AD

Quick reference

P14AD at a glance

Plain-language meaning
This error means that a sensor in the car that measures the battery's power is not detecting enough electricity. It's like when a flashlight is dim because the batteries are low.
Urgency
Moderate – It should be addressed soon to avoid potential battery or electrical system issues.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
Multimeter, Wrench set, OBD-II scanner

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This error means that a sensor in the car that measures the battery's power is not detecting enough electricity. It's like when a flashlight is dim because the batteries are low.

Explanation

The code P14AD indicates that the vehicle's onboard computer has detected a current reading that is lower than expected from Battery Sensor 2.

Technical description

Battery Sensor 2 is responsible for monitoring the current flow to and from the battery. This sensor helps the vehicle's computer manage charging and energy distribution. A 'current too low' error suggests that the sensor is not detecting the expected amount of current, which could be due to a faulty sensor, wiring issues, or problems with the battery itself.

Symptoms

• Battery warning light on

• Dimming headlights

• Reduced electrical performance

Common Causes

• Faulty battery sensor

• Poor electrical connections

• Battery issues

Glossary

OBD-II: On-Board Diagnostics, a standardized system for self-diagnostics in vehicles.

Multimeter: A tool used to measure electrical voltage, current, and resistance.

Diagnosis steps

• Check battery sensor connections

• Test battery voltage and current

• Inspect wiring for damage

Repair procedures

• Replace faulty battery sensor

• Repair or replace damaged wiring

• Ensure battery is functioning properly

Tools required

• Multimeter

• Wrench set

• OBD-II scanner

Estimated repair cost

$100 - $300

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Volt

• Cadillac ELR

• Buick LaCrosse

Preventive measures

• Regularly check battery connections

• Perform routine battery maintenance

• Inspect wiring for wear and tear

Error code type

Sensor Issue

User experience recommendations

• Don't ignore the battery warning light.

• Get the battery and sensors checked by a professional.

Warranty information

Battery and sensor issues may be covered under the vehicle's powertrain or emissions warranty.

Historical data

This code has been more commonly reported in hybrid and electric vehicles due to their complex battery management systems.

Urgency level

Moderate – It should be addressed soon to avoid potential battery or electrical system issues.

Testing conditions

• Vehicle at operating temperature

• Battery fully charged

Component location

Battery Sensor 2 is typically located near the vehicle's battery, often integrated into the battery terminal or nearby wiring.

FAQs

Q: Can I drive with a P14AD code?
A: It's not recommended to drive for extended periods with this code, as it may lead to battery or electrical system issues.

Q: How can I reset the P14AD code?
A: After addressing the underlying issue, you can reset the code using an OBD-II scanner.

Optional diagnostic gear

Tools that may help diagnose P14AD

FOXWELL NT301 diagnostic tool illustration

Budget · Enhanced code reader

FOXWELL NT301

A wired color-screen reader with readiness hotkeys, live data, code definitions, and data logging.

A dependable first-pass scanner for verifying the code and checking live data or readiness monitors.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for voltage, continuity, and basic electrical checks while narrowing down the fault.

View on Amazon
TEKTON 3/8" Socket and Ratchet Set diagnostic tool illustration

Universal · Socket set

TEKTON 3/8" Socket and Ratchet Set

A practical metric and SAE socket set for many diagnostic teardowns and component replacements.

Useful for common under-hood access and removal work during diagnosis or repair.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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