P1808
Transmission 4-Wheel Drive Low Indicator Circuit Failure
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)
Symptoms
- The 4WD Low indicator does not light up when the mode is turned on
- 4WD Low indicator is constantly on
- 4WD Low indicator flashes
- Incorrect operation of the all-wheel drive system
Causes
- Open or short circuit in the indicator circuit
- 4WD Low Position Sensor Malfunction
- Problems with the transmission control unit
- Corrosion of contacts or connectors
- Malfunction of the indicator itself
How to Fix
- Check the integrity of the indicator circuit wiring harness
- Check the operation of the 4WD Low position sensor
- Check contacts and connectors for corrosion
- Scan the transmission control unit for errors
- If necessary, replace faulty components