Right Rear Turn Signal Circuit
Table of contents
B3951 SATURN Possible Causes
- Faulty Right Rear Turn Signal
- Right Rear Turn Signal harness is open or shorted
- Right Rear Turn Signal circuit poor electrical connection
How do I fix code B3951 SATURN?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- B3951 01 Right Rear Turn Signal Circuit Short to Battery
- B3951 02 Right Rear Turn Signal Circuit Short to Ground
- B3951 04 Right Rear Turn Signal Circuit Open
Cost of diagnosing the B3951 SATURN code
The cost of diagnosing the B3951 SATURN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B3951 SATURN Description
Ground is applied at all times to the turn signal/multifunction switch. The turn signal lamps may only be activated with the ignition switch in the ON or START positions. When the turn signal/multifunction switch is placed in either the TURN RIGHT or TURN LEFT position, ground is applied to the Body Control Module (BCM) through either the right turn or left turn signal switch signal circuit. The BCM responds to the turn signal switch input by applying a pulsating voltage to the front and rear turn signal lamps through there respective control circuits. When a turn signal request is received by the BCM, a serial data message is sent to the instrument cluster requesting the respective turn signal indicator be pulsed ON and OFF. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to voltage, short to ground or an open/high resistance in the right rear turn signal control circuit.