AutoCodes – Mercury – P0562 Mercury

P0562 Mercury Code - System Voltage Low

Quick Answer

With the engine running, the charging system warning indicator is off. Common causes include Low battery charge, Battery defective, Loose or missing alternator drive belt. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0562 Mercury indicates System Voltage Low.
Common causes: Common causes include Low battery charge, Battery defective, Loose or missing alternator drive belt.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,477

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 12, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0562 Mercury Description

With the engine running, the charging system warning indicator is off. The sense circuit to the generator field coil is 13-15 volts. This voltage feedback is used by the regulator to maintain the battery voltage at the desired set point. The Stator circuit (internal to the generator) is used to monitor generator operation. This circuit and other regulator internal conditions are checked by the regulator to allow the Powertrain Control Module (PCM) to turn off the charging system warning indicator by sending a message over the controller area network (CAN) bus to the instrument cluster (IC). The positive battery output (B+) circuit is the generator output voltage supplied to the battery and electrical system.
The System voltage is monitored by the PCM. This Diagnostic Trouble Code (DTC) is set when the Powertrain Control Module detects low system voltage.

OBDII Code P0562 Mercury - System Voltage Low - AutoCodes.com — P0562 Mercury Code - System Voltage Low

What does this mean?

What are the Possible Causes of the DTC P0562 Mercury?

Low battery charge
Battery defective
Loose or missing alternator drive belt
Faulty alternator
Open or short system voltage circuit

How to Fix the DTC P0562 Mercury?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Start by checking for loose or corroded battery terminals. If the terminals are OK, the next step is to recharge or replace the battery.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0562 Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need more information on how to fix the P0562 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0562 Mercury Code

1. What are the common symptoms of OBDII code P0562 in a Mercury?

- Common symptoms include dimming or flickering lights, slow electric window operation, and difficulty starting the vehicle.

2. What does the OBDII code P0562 indicate in a Mercury?

- The code P0562 indicates that the system voltage in the vehicle is low, potentially affecting the proper functioning of various electrical components.

3. What are the possible causes of OBDII code P0562 in a Mercury?

- Possible causes include a faulty alternator, a weak battery, loose or corroded battery connections, or issues with the voltage regulator.

4. How can I diagnose the OBDII code P0562 in my Mercury?

- You can diagnose the code by using a diagnostic scanner to retrieve the code, checking the battery voltage with a multimeter, and inspecting the battery and alternator connections for any issues.

5. Can I still drive my Mercury with the OBDII code P0562 present?

- It is not recommended to drive the vehicle with the code P0562 as it can lead to electrical problems and potential stalling of the engine.

6. How can I repair the OBDII code P0562 in my Mercury?

- The repair may involve replacing the alternator, battery, or voltage regulator, as well as ensuring all connections are tight and free of corrosion.

7. Will resetting the OBDII code P0562 make it go away permanently?

- Resetting the code may temporarily clear the error, but if the underlying issue causing the low system voltage is not addressed, the code is likely to reappear.

8. Can a bad alternator cause the OBDII code P0562 in a Mercury?

- Yes, a failing alternator can cause low system voltage, triggering the OBDII code P0562 in a Mercury.

9. How long does it take to repair the OBDII code P0562 in a Mercury?

- The time needed for repair can vary depending on the exact cause of the issue, but it typically takes a few hours to replace the alternator, battery, or voltage regulator.

10. Is it safe to ignore the OBDII code P0562 in my Mercury?

- Ignoring the code can lead to further electrical problems and potentially leave you stranded, so it is best to address the issue promptly.