JOHNBRAY11

Hey guys. I was wondering if anyone had a list of codes and what they stand for on the RX300 or knew where i might find them? Did a search and came up blank. I have 1999 RX300. Are all the codes the same for all Lexus? thanks for the help.

John

TunedRX300

A kind suggestion, Google is very useful search tool. Use it.

JOHNBRAY11

This is a list of the codes produced by OBDII

All of which will cause the Check engine light to stay on.

P0100
MAF Malfunction

P0101
MAF Circuit Range/Performance

P0110
IAT Circuit Malfunction

P0115
ECT Circuit Malfunction

P0116
ECT Circuit Range/Performance

P0120
TP Position Sensor/Switch ‘‘A’’ Circuit Malfunction

P0121
TP Position Sensor/Switch ‘‘A’’ Circuit Range/Performance

P0125
Insufficient Coolant Temperature For Closed Loop Fuel Control

P0130
HO2S Circuit Malfunction, Bank 1 Sensor 1

P0133
HO2S Circuit Slow Response, Bank 1 Sensor 1

P0135
HO2S Heater Circuit Malfunction, Bank 1 Sensor 1

P0136
HO2S Circuit Malfunction, Bank 1 Sensor 2

P0141
HO2S Heater Circuit Malfunction, Bank 1 Sensor 2

P0150
HO2S Circuit Malfunction, Bank 2 Sensor 1

P0153
HO2S Circuit Slow Response, Bank 2 Sensor 1

P0155
HO2S Heater Circuit Malfunction, Bank 2 Sensor 1

P0156
HO2S Sensor Circuit Malfunction, Bank 2 Sensor 2

P0161
HO2S Heater Circuit Malfunction, Bank 2 Sensor 2

P0170
Fuel Trim Malfunction

P0171
System Too Lean (Fuel Trim)

P0172
System Too Rich (Fuel Trim)

P0174
System Too Lean (A/F Lean Malfunction, Bank 2)

P0175
System Too Rich (A/F Rich Malfunction, Bank 2)

P0300
Random Misfire Detected

P0301
Misfire Detected, Cylinder 1

P0302
Misfire Detected, Cylinder 2

P0303
Misfire Detected, Cylinder 3

P0304
Misfire Detected, Cylinder 4

P0305
Misfire Detected, Cylinder 5

P0306
Misfire Detected, Cylinder 6

P0307
Misfire Detected, Cylinder 7

P0308
Misfire Detected, Cylinder 8

P0325
KS 1 Circuit Malfunction

P0330
KS 2 Circuit Malfunction

P0335
CKP Sensor ‘‘A’’ Circuit Malfunction

P0340
CMP Circuit Malfunction

P0385
CKP Sensor ‘‘B’’ Circuit Malfunction

P0401
EGR Insufficient Flow

P0402
EGR Excessive Flow

P0403
EGR Circuit Malfunction

P0420
Catalyst System Efficiency Below Threshold Bank 1

P0430
Catalyst System Efficiency Below Threshold Bank 2

P0440
EVAP Emission Control System Malfunction

P0441
EVAP Emission Control System Improper Purge Flow

P0446
EVAP Emission Control System Vent Control Malfunction

P0450
EVAP Emission Control System Pressure Switch Malfunction

P0451
EVAP Control System Pressure Sensor Range/Performance

P0500
VSS Malfunction

P0505
Idle Control System Malfunction

P0510
Closed TP Switch Malfunction

P0550
Power Steering Pressure Sensor Circuit Malfunction

P1100
BARO Sensor Circuit Malfunction

P1120
Accelerator Pedal Position Sensor Circuit Malfunction

P1121
Accelerator Pedal Position Sensor Range/Performance Problem

P1125
Throttle Control Motor Circuit Malfunction

P1126
Magnetic Clutch Circuit Malfunction

P1127
ECTS Actuator Power Source Circuit Malfunction

P1128
Throttle Control Motor Lock Malfunction

P1129
Electronic Throttle Control System

P1130
Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (Bank 1 Sensor 1)

P1133
Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 1 Sensor 1)

P1135
Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P1150
Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (Bank 2 Sensor 1)

P1153
Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 2 Sensor 1)

P1155
Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P1200
Fuel Pump Relay/ECU Circuit Malfunction

P1300
Igniter Circuit Malfunction (Bank 1 Or No. 1)

P1305
Igniter Circuit Malfunction, (Bank 2 Or No. 2)

P1310
Igniter Circuit Malfunction (No. 3)

P1315
Igniter Circuit Malfunction (No. 4)

P1320
Igniter Circuit Malfunction (No. 5)

P1325
Igniter Circuit Malfunction (No. 6)

P1330
Igniter Circuit Malfunction (No. 7)

P1335
CKP Sensor Circuit Malfunction During Engine Running

P1340
Igniter Circuit Malfunction (No. 8)

P1345
VVT Sensor Circuit Malfunction (Bank 1)

P1346
VVT Sensor Rang/Performance Problem (Bank 1)

P1349
VVT System Malfunction (Bank 1)

P1350
VVT Sensor Circuit Malfunction (Bank 2)

P1351
VVT Sensor Range/Performance Problem (Bank 2)

P1354
VVT System Malfunction (Bank 2)

P1400
Sub-TP Sensor Malfunction

P1401
Sub-TP Sensor Range/Performance

P1410
EGR Valve Position Sensor Circuit Malfunction

P1411
EGR Valve Position Sensor Circuit Range/Performance Malfunction

P1500
Starter Signal Circuit Malfunction

P1520
Stop Lamp Switch Malfunction

P1565
Cruise Control Main Switch Circuit Malfunction

P1566
Cruise Control Main Switch Circuit Malfunction

P1600
ECM BATT Malfunction

P1605
Knock Control CPU Malfunction

P1633
ECM Malfunction (ETCS Circuit)

P1645
Body ECU Malfunction

P1656
OCV Circuit Malfunction (Bank 1)

P1663
OCV Circuit Malfunction (Bank 2)

P1780
PNP Switch Malfunction

B2785
Ignition Switch On Malfunction (Immobilizer System)

B2786
Ignition Switch Off Malfunction (Immobilizer System)

B2785
Ignition Switch On Malfunction (Immobilizer System)

B2791
Key Unlock Warning Switch Malfunction (Immobilizer System)

B2795
Unmatch Key Code (Immobilizer System)

B2796
No Communication In Immobilizer System

B2797
Communication Malfunction No. 1 (Immobilizer System)

B2798
Communication Malfunction No. 2 (Immobilizer System)

Lexmex

I also go over them when people have a CEL.

Benjamin T

iTrader: (2)

do these codes apply to all lexus vehicles, or are they rx specific?

Lexmex

To the OBDII vehicles they should, but OBDI vehicles have different code numbers.

Benjamin T

iTrader: (2)

what model year did obd2 start?

Lexmex

Most vehicles with model year 1996, though I could have sworn there were a few that started in 1995.

The scary one will be OBD3, and that is supposed to have some big brother type features.

grammym2

My 2001 Lexus RX300 keeps showing check engine and two other symbols. Codes -1130 p1150 p0440 came up when scanned. How can we fix this? HELP!!!

bearbrew

The 1130 and 1150 codes are for the A/F sensors.
One is in the front exhaust manifold just aft of the radiator which is visible when you look between the radiator and engine. The other one is accessible from beneath the car in the aft exhaust manifold. Both sensors are fairly easy to replace if you are handy with doing some of your own maintenance. There are several write-ups on the forum on replacing both sensors.
The most reasonable place to purchase the OEM sensors is amazon.com. Denso is the OEM supplier for the sensors. The Denso part number is 234-9009 and they are in the $110.00 to $130.00 price range. A Lexus dealer will charge about $330.00 for each sensor and Toyota will charge about $250.00 for each sensor.
Driving habits seem to make a lot of difference in longevity of the sensors. My wife's 2000 RX300 has a lot of short trips and both sensors went out at about 65,000 miles. Some people here on the forum are getting in excess of 100,000 miles.

kching989

Can anyone please post a picture of location of O2 sensor bank 1 sensor 1 and bank 2 sensor 1, I saw two different sensor location for this code P1155. Thanks in advance.

code58

kching, this is an excellent OBD2 site but it DOES have an error on DTC P1155. http://www.obd-codes.com/trouble_codes/lexus/ This page IS Lexus specific but the site has a ton of good info and help. Just wander for a while and you'll discover all the good info that is there. I suspicion the mistake came directly from Toyota becuse I have seen the same mistake before on other sites. The B2S1 is the FRONT A/F ratio sensor (the P1155 would have been generated there) and that is located on the front cat just after the exhaust manifold (up by the radiator) and the B1S1 is in the same position just after the rear exhaust manifold (back by the firewall). There are good pictures on this forum of the location of the sensors (I believe by Lexmex). A search should easily find them.