LEXUS RX300 "SOLAR SENSOR CIRCUIT B1421"

leonloke · **Posted:** Sat Feb 03, 2007 11:50 pm

CAN ANYONE SHARE WITH ME ON THE ABOVE TROUBLE CODE?

THE CAR SUFFER IRREGULAR ENGINE IDLING / STALL AT TIMES. HOWEVER PROBLEM WILL OCCUR ONCE A WHILE AND NOT CONSISTANT THERE.

ALREADY REPLACE THROTTLE POSITION SENSOR, IVAC , MAP SENSOR, BUT IT DOES HELP AT ALL.

PLS ADVICE.

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andywheelz · **Joined:** Fri Jan 26, 2007 1:10 am **Posts:** 112

Can't offer any help on engine running problem, but from what I read, this code actually deals with cars Climate Control and should not affect how your engine runs. "The Solar sensors are located around the front windshield deflectors," not sure if this makes any sense, its a translation.

jkirby26 · **Posted:** Thu Apr 12, 2007 3:12 pm

I have the same problem on my 04 Toyota Sienna. The manual states that if you did the test on a dark place, B1421 Solar Sensor Circiut could be displayed. If not check the harness between automatic light control sensor and the A/C amplifier or check the solar sensor or the A/C amplifier......hope this help!

jeff compton · **Posted:** Thu Apr 12, 2007 4:19 pm

have you tried the dealer for a software update of any kind maybe?

LEXUS RX300 "SOLAR SENSOR CIRCUIT B1421"

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