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Code P2AD6

Quick reference

P2AD6 at a glance

Plain-language meaning
This code means there's a problem with the sensor that tells the car's computer where the pump that helps reduce pollution is located. It's like when a toy's battery is low and it can't move properly.
Urgency
Moderate – It should be addressed soon to avoid potential emission test failures.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Wrench set

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

Laymans terms

This code means there's a problem with the sensor that tells the car's computer where the pump that helps reduce pollution is located. It's like when a toy's battery is low and it can't move properly.

Explanation

The P2AD6 code indicates an issue with the sensor that monitors the position of the reductant pump motor, which is part of the vehicle's emission control system.

Technical description

The reductant pump motor position sensor circuit monitors the position of the motor that pumps the diesel exhaust fluid (DEF) into the exhaust stream to reduce emissions. A fault in this circuit can prevent the proper operation of the emissions system.

Symptoms

• Check Engine Light is on

• Reduced engine performance

• Increased emissions

Common Causes

• Faulty reductant pump motor position sensor

• Wiring issues such as open or short circuits

• Faulty reductant pump motor

Glossary

Reductant: A substance used to reduce emissions, often diesel exhaust fluid (DEF).

Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for damage or corrosion.

• Test the reductant pump motor position sensor for proper operation.

Repair procedures

• Replace the reductant pump motor position sensor.

• Repair or replace damaged wiring or connectors.

• Replace the reductant pump motor if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Wrench set

Estimated repair cost

$200 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-250

• Chevrolet Silverado 2500

• Ram 2500

Preventive measures

• Regularly inspect the emissions system components.

• Ensure proper maintenance of the vehicle's DEF system.

• Keep the vehicle's software up to date.

Error code type

Sensor Issue

User experience recommendations

• Have the vehicle inspected by a professional if the Check Engine Light is on.

• Avoid ignoring the issue as it can lead to increased emissions and poor engine performance.

Warranty information

Check with the vehicle manufacturer for specific warranty coverage related to emissions components.

Historical data

This code has become more common with the increased use of DEF systems in diesel vehicles to meet stricter emission standards.

Urgency level

Moderate – It should be addressed soon to avoid potential emission test failures.

Testing conditions

• Engine running

• Vehicle in park or neutral

Component location

The reductant pump motor position sensor is typically located near the DEF tank or along the DEF line.

FAQs

Q: Can I drive with a P2AD6 code?
A: It's possible to drive for a short period, but it's best to have it checked soon to avoid emissions issues.

Q: What happens if I ignore this code?
A: Ignoring the code can lead to increased emissions and potential failure of emissions tests.

Optional diagnostic gear

Tools that may help diagnose P2AD6

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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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 checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

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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