B1802 on Jeep
Lamp Turn Signal Rear Output Circuit (manufacturer-specific)
B1802 on Jeep vehicles indicates lamp turn signal rear output circuit (manufacturer-specific). Au7o has documented this code across 1 Jeep model — most commonly on Compass. B1802 is a manufacturer-specific body code, associated mainly with Ford-family lighting systems, that generally indicates a fault in the rear turn-signal lamp output circuit detected by the lighting/body control module. Because it is manufacturer-specific, the precise wording and fault type (open, short, or failure) can vary by make and model and should be confirmed against the vehicle's service information. The practical effect is typically an inoperative or improperly functioning rear turn signal. Typical repair costs on Jeep range from $90 to $400, depending on the specific model and root cause.
Common Causes of B1802
- •Fault (short or open) in the rear turn-signal wiring
- •Faulty rear turn-signal bulb
- •Corroded or damaged bulb socket/connector
- •Chafed or pinched rear harness
- •Water intrusion in the rear lamp assembly
- •Internal fault in the lighting/body control module
B1802 on Jeep by Model
Jeep Compass(1 issue)
- HVAC Blend Door Actuator Gear Failure (Clicking Behind the Dash, Stuck Temperature)2007-2020
The plastic gears inside the temperature blend door actuator strip, so the actuator motor free-spins and ratchets. Owners hear a rapid tick-tick-tick from behind the glovebox or center dash for several seconds after startup and every time the temperature or mode is changed, and one side of the cabin (or the whole system) gets stuck blowing only hot or only cold. The failure is common on the MK Compass and carries into the MP; the recirculation and mode actuators use the same gear train and fail the same way. It is a wear item rather than a control-head fault, so replacing the climate control head does not fix it.
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View B1802 across all makes →Frequently Asked Questions
What does B1802 mean on Jeep?▼
B1802 stands for "Lamp Turn Signal Rear Output Circuit (manufacturer-specific)." B1802 is a manufacturer-specific body code, associated mainly with Ford-family lighting systems, that generally indicates a fault in the rear turn-signal lamp output circuit detected by the lighting/body control module. Because it is manufacturer-specific, the precise wording and fault type (open, short, or failure) can vary by make and model and should be confirmed against the vehicle's service information. The practical effect is typically an inoperative or improperly functioning rear turn signal. On Jeep specifically, this code is documented across 1 model.
What causes B1802 on Jeep vehicles?▼
Common causes on Jeep: Fault (short or open) in the rear turn-signal wiring, Faulty rear turn-signal bulb, Corroded or damaged bulb socket/connector, Chafed or pinched rear harness, Water intrusion in the rear lamp assembly. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B1802 on a Jeep?▼
Repair costs on Jeep range from $90 to $400, depending on the specific model and root cause.
Which Jeep models have B1802 documented?▼
Au7o has documented B1802 on 1 Jeep model: Compass.