Exterior Ligth Power Fault
Table of contents
B1970 SATURN Possible Causes
- Faulty Low Beam and Parking Light Relay
- Low Beam and Parking Light Relay harness is open or shorted
- Low Beam and Parking Light Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B1970 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.
Cost of diagnosing the B1970 SATURN code
The cost of diagnosing the B1970 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)
B1970 SATURN Description
The Body Control Module (BCM) commands exterior lights on by energizing Low Beam and Parking Light Relays. The Diagnostic Trouble Code (DTC) B1970 will set when exterior lights have been commanded on and BCM detects low voltage (short to ground) in the wire between BCM and relays. When DTC B1970 is set, BCM will command exterior lights off, and then attempt to turn exterior lights on until lights are no longer requested. DTC B1970 will clear when conditions for fault no longer exist or when scan tool is used. A history DTC will clear after 50 consecutive ignition cycles if conditions for fault no longer exist.