Volkswagen P0562

System voltage low on VW — battery or alternator failure, with battery-coding via VCDS essential on any post-2011 Golf/Passat.

Volkswagen P0562 — System voltage low on VW — battery or alternator failure, with battery-coding via VCDS essential on any post-2011 Golf/Passat. Typical UK independent garage cost: £100–£420.

What actually causes P0562 on a Volkswagen

VW alternators (Valeo/Bosch) generally last 150k+ miles, so battery is the more common cause. On Mk7 Golf and B8 Passat the battery management system (BMS) needs new batteries CODED via VCDS — without coding, the alternator continues to charge based on the old battery's profile and undercharges the new one, triggering P0562 within weeks.

Volkswagen engines that log P0562

• 1.4/1.6 TDI/TSI (Golf, Polo, Passat, Caddy)
• 2.0 TDI/TSI (Golf, Passat, Tiguan, Touran)
• 1.0/1.4 TSI (Polo, Golf, Up)

How we diagnose P0562 on a Volkswagen

1. VCDS — read battery monitoring module data, check coded vs actual battery type
2. Battery voltage at rest, at idle, and under load
3. Alternator output test
4. Code new battery (AGM/EFB/flooded) to BMS via VCDS adaptation
5. Reset the energy management adaption afterwards

The common misdiagnosis to avoid

Quick-fits and chain garages don't usually code VW batteries — if a customer brings you a Mk7+ Golf with P0562 within 6 months of a new battery elsewhere, code it first before ordering more parts.

Volkswagen P0562 repair cost in the UK

Expect £100–£420 including parts and labour at an independent garage. Main-dealer quotes on Volkswagen are usually higher for the same job, and the spread exists because the cheap cause and the expensive cause throw the same code — pay for the diagnosis before you pay for parts.

Bob's workshop tip

Charge £25 to code a customer's already-installed battery — it's a 4-minute job, fixes P0562 90% of the time on these cars, and saves them a new alternator they didn't need.

Codes usually seen alongside P0562 on Volkswagen

• P0563
• P162E
• P062F

Symptoms drivers report with P0562

• Battery warning light flickers intermittently, especially at idle with electrical load on
• Dashboard dims when indicators are on or wipers run
• Car fails to start cold after sitting for 2–3 days
• Stop-start system disables itself with a 'battery saver active' message
• Voltmeter reads below 13.2V with engine running

Repairs that clear P0562

• Load-test battery
• Alternator output test
• Clean and torque earths

For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P0562 guide.

Reading P0562 on a Volkswagen properly

A generic reader will show P0562 and nothing else. What matters is the freeze-frame data stored with it — engine speed, load, coolant temperature and fuel trims at the moment the fault was logged — plus whether any other module on the Volkswagen has logged something at the same time. Codes rarely arrive alone, and the order they were stored in usually points at which one is the cause and which are the consequences.

Clearing P0562 without fixing it

Erasing the code resets the Volkswagen's readiness monitors as well as the light. The fault returns on the next drive cycle if the cause is still there, and in the meantime the incomplete monitors can stop the car passing an emissions check. After a genuine repair, the car is driven until the relevant monitor completes before it is handed back.

Bob's Mechanical Repairs is an independent garage in Birnam, Dunkeld, Perthshire, with 32 years of Bob's experience on the tools. If P0562 is showing on your Volkswagen, bring any scan results with you — we will read the live data ourselves, confirm which cause it actually is, and price the repair before any work starts.