garajizOBD-II code · manufacturer-specific
P1821
Transmission Neutral Safety Switch Circuit Failure
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does P1821 mean?
P1821 is defined as “Transmission Neutral Safety Switch Circuit Failure”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Citroen, Diğer, Peugeot: Transmission Transfer Case Clockwise Shift Relay Coil Open Circuit
Related codes
- P1820Transmission 4-Wheel Drive Mode Select Short Circuit To Ground
- P1822Transmission Neutral Safety Switch Open Circuit
- P1819Transmission 4-Wheel Drive Mode Select Short Circuit To Battery
- P1823Transmission Neutral Safety Switch Short Circuit To Battery
- P1818Transmission 4-Wheel Drive Mode Select Open Circuit
- P1824Transmission Neutral Safety Switch Short Circuit To Ground
Look up another code
This page is general information; an exact diagnosis needs measurements and a technician’s check.