I have a 2004 LS430 with 145km. I am the second owner since 55km. The car was a Certified Lexus. The dealer replaced my transmission at ~93km. I like the car. It runs smooth and quiet. Just came back from a trip from SF Bay Area to Las Vegas, around 1100 miles total. The car ran great with a average 27.5 mpg. After the trip, I notice the maintenance light. I am due for an oil change and cabin filter change. I did both and attempt to reset the maintenance light. The light remains, so I took my code reader and see what is the trouble. I did the first reading without running the engine and did a second reading (live data) with the engine running. I did not expect that many codes. Please help me make sense of these codes.

[U]Data stored in car computer (engine not running)
P0300 – Random misfire detected.
P0100 – Mass or volume air flow circuit.
P0102 – Mass air flow circuit, low input.
P0103 – Mass air flow circuit, high input.
P0125 – Insufficient coolant temperature for closed loop fuel control.
P0751 – Shift solenoid A performance or stuck off.

[U]]Live Data with engine running.
P0011 – Intake camshaft position timing over advanced Bank #1.
P0016 – Crankshaft position, Camshaft position correlation, Bank #1 Sensor A.
P0018 – Crankshaft position, Camshaft position correlation, Bank #1 Sensor B.
P0021 – Intake Camshaft Position Timing, over advanced Bank #2.
P0031 – HO2S Heater Control Circuit Low (Bank 1, Sensor 1)
P0037 – HO2S Heater Control Circuit Low (Bank 1, Sensor 2)
P0051 – HO2S Heater Control Circuit Low (Bank 2, Sensor 1)
P0057 – HO2S Heater Control Circuit Low (Bank 2, Sensor 2)
P0128 – Coolant Temp below Thermostat Regulation Temp
P0130 – O2 circuit, Bank 1, Sensor 1
P0150 – O2 circuit, Bank 2, Sensor 2
P0500 – Vehicle Speed Sensor A
P0705 – Transmission Range Sensor Circuit (PRNDL Input)
P0717 – Turbine/Input Shaft speed sensor circuit, no signal
P0729 – Gear 6 Incorrect Ratio
P0748 – Pressure Control Solenoid A, electrical.
P0751 – Shift solenoid A; performance or stuck off.
P0756 – Shift solenoid B; performance or stuck off.
P0761 – Shift Solenoid C; performance or stuck off.
P0766 – Shift Solenoid D; performance or stuck off.
P0781 – 1- 2 shift.
P0973 – Shift Solenoid A, control circuit Low.
P0974 – Shift Solenoid B, control circuit High.
P0976 – Shift Solenoid B, control circuit low.
P0977 – Shift Solenoid B, control circuit high.
P0979 – Shift Solenoid C, control circuit low.
P0980 – Shift Solenoid C, control circuit high.

 

Why don't you take it back to the Lexus dealer, since it's certified?

Those are a lot of codes singing. Seems like they put in a used or refurbished tranny, that's why it's acting up. I'd have a professional look at all those codes.

 

My 2006 ls430 just started throwing all those same codes. What was the diagnosis with your car? I tried disconnecting the battery for a few minutes, but it didn't help. Whenever the codes are cleared, somewhere between 14 and 40 codes immediately come back.

Thanks!

 

How old is your battery? I would suspect it is causing these issues.

 

+1
Also check on wires. I have seen wires that are chewed by rodents which cause the car to have all kind of codes.