OBD-II code · manufacturer-specific
P1812
Transmission 4-Wheel Drive High Indicator Short Circuit To Ground
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does P1812 mean?
P1812 is defined as “Transmission 4-Wheel Drive High Indicator Short Circuit To Ground”.
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.
- Ford, Lincoln, Mercury: Transmission 4-Wheel Drive Mode Select Circuit Failure
- Buick, Cadillac, Chevrolet, GM, GMC, Oldsmobile, Saturn: Transmission Over Temperature Condition
Related codes
- P1811Transmission 4-Wheel Drive High Indicator Short Circuit To Battery
- P1813Transmission 4-Wheel Drive Low Indicator Circuit Failure
- P1810Transmission 4-Wheel Drive High Indicator Open Circuit
- P1814Transmission 4-Wheel Drive Low Indicator Open Circuit
- P1809Transmission 4-Wheel Drive High Indicator Circuit Failure
- P1815TFP Valve Position Switch Circuit/ Transmission 4-Wheel Drive Low Indicator Short Circuit To Battery
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This page is general information; an exact diagnosis needs measurements and a technician’s check.