Citroen P0562

System voltage low on Citroen — PSA Smart Charging system issues plus BSI (body computer) charging-strategy faults common on C3/C4.

Citroen P0562 — System voltage low on Citroen — PSA Smart Charging system issues plus BSI (body computer) charging-strategy faults common on C3/C4. Typical UK independent garage cost: £100–£420.

What actually causes P0562 on a Citroen

PSA's Smart Charging strategy is controlled by the BSI body computer — it tells the alternator when to charge based on driving conditions and battery state. If the BSI battery-monitoring data corrupts (often after a flat battery jump-start), the strategy fails and the alternator under-charges. C3 and C4 with stop-start need AGM batteries; fitting flooded triggers P0562.

Citroen engines that log P0562

• 1.6 HDi (C3, C4, DS3, Berlingo)
• 1.2/1.6 PureTech (C3, C4, DS3)
• 2.0 HDi (C5, Dispatch)

How we diagnose P0562 on a Citroen

1. Lexia / Diagbox — read BSI battery monitoring data and reset if corrupted
2. Battery rest and load test
3. Alternator output test
4. For stop-start cars, confirm correct AGM battery is fitted and coded
5. Inspect earth points on engine-to-body and battery-to-chassis

The common misdiagnosis to avoid

Don't replace battery or alternator on a Citroen with stop-start until you've checked the BSI battery-monitoring data — a software reset via Diagbox often clears P0562 with no parts changed.

Citroen P0562 repair cost in the UK

Expect £100–£420 including parts and labour at an independent garage. Main-dealer quotes on Citroen 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

If a customer's brought you a C3 PureTech with P0562 after a flat battery / jump-start, almost always a Diagbox software reset of the BSI battery data clears it — bill 30 minutes and send them on their way.

Codes usually seen alongside P0562 on Citroen

• P0563
• P062F
• U1213

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.