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P2DD3: Control Pilot Charging Switch B Stuck Off

The control pilot charging switch B reports a stuck off condition. SAE J1772 charging signal handshake may be compromised.

Medium severity. Can I keep driving?If the battery warning light comes on, you could get stranded. Turn off electrical accessories and go straight to a repair shop.

Symptoms

  • Charge status indicator shows fault
  • Charging may not start or interrupts
  • Slower-than-expected charge rate

Most likely causes

  • Contacts oxidised - high resistance
  • Actuator failed
  • Carbon or debris buildup preventing free movement

What to check, in order

Start with the simplest. You can tick off each step.

Good to know

  • Repair difficulty: medium
  • It can trigger limp mode.

What each character of P2DD3 means

  • P: Powertrain: engine and transmission
  • 2: Generic code: same on every make
  • D: Subsystem depends on the code range
  • D3: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2DD3?

If the battery warning light comes on, you could get stranded. Turn off electrical accessories and go straight to a repair shop.

What causes code P2DD3?

The most common causes are: contacts oxidised - high resistance; actuator failed; carbon or debris buildup preventing free movement.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.