P2D99
Starter/Generator Phase Y Current Circuit Intermittent/Erratic
P2D99 is an OBD-II diagnostic trouble code meaning: Starter/Generator Phase Y Current Circuit Intermittent/Erratic. Common causes: damage to phase y wiring harness, oxidation or poor contact in connectors. Estimated repair cost: $56–222.
Symptoms
- Unstable engine operation
- Problems starting the engine
- Battery charge indicator flashing
- Generator power reduction
- Errors in other electrical systems
Causes
- Damage to phase Y wiring harness
- Oxidation or poor contact in connectors
- Starter-generator malfunction
- Problems with the control module
- Short circuit in the circuit
How to Fix
- Check the integrity of the phase Y wiring harness
- Clean and check connector contacts
- Test the starter-generator
- Check control module
- Measure the resistance and voltage in the circuit
Related codes
Error P2D99 by Vehicle Brand
FAQ
What does the P2D99 code mean?
P2D99 is an OBD-II diagnostic trouble code that indicates: Starter/Generator Phase Y Current Circuit Intermittent/Erratic
What causes a P2D99 error code?
The most common causes of P2D99 include: Damage to phase Y wiring harness; Oxidation or poor contact in connectors; Starter-generator malfunction; Problems with the control module.
How do I fix a P2D99 diagnostic trouble code?
To fix P2D99: Check the integrity of the phase Y wiring harness. Clean and check connector contacts. Test the starter-generator. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2D99?
Limited driving only, diagnose soon
How much does it cost to fix P2D99?
The estimated repair cost for P2D99 is $56–222. Actual cost depends on your vehicle, location, and labor rates.
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