B1424
Book Code B1424 Inspection
Automotive Climate Control
Low / Normal Under Shade
⚠️ Normal in Shade
Code B1424 - Solar Sensor Circuit (Driver Side) - Toyota / Lexus
The companion code to B1421 in dual-zone climate Toyota and Lexus vehicles, measuring solar load on the driver cabin zone.
⚠️
Critical Advice for Drivers (Save Your Money):
Notice: Just like B1421, code B1424 is 100% normal when scanned indoors or shaded. Do not replace before daylight verification.
Safe to Drive? ✅ Yes, Safe
Estimated Repair Cost 0 - 250 SAR
Common Makes Toyota, Lexus
System Category sensor
Symptoms of Trouble Code B1424:
- ⚠️ Trouble code present when scanned under shade
- ⚠️ Auto climate might not aggressively adjust airflow for direct driver-side sunlight
Common Causes Behind Code B1424:
- 🔍 Vehicle inspected indoors or at night
- 🔍 Dashboard dashmat or tint film blocking sensor
- 🔍 Sensor connector disconnected
Diagnostic Procedure Recommended by Auto Save Technicians:
- 1 Shine bright flashlight on driver dashboard sensor dome
- 2 Clear DTC memory and re-scan climate control
Specialist Recommendation:
Request Parts & Repair Quote
Test under bright daylight first before approving any repairs.
Associated Components: Driver Solar Sensor
Frequently Asked Questions: Code B1424
What is the difference between B1421 and B1424?
B1421 monitors the passenger side while B1424 monitors the driver side in dual-zone climate systems.