2001 RX 300 , 3.288 v on bank 1 sensor 1 high voltage. Bank 2 .355

Asked by Feb 22, 2017 at 09:28 PM about the Lexus RX 300

Question type: Maintenance & Repair

P-1130 code changed bank 1air / fuel sensor for big bucks. Still high voltage
??

4 Answers

78,965

P1130 LEXUS - Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction Bank 1 Sensor 1...Possible causes; Faulty Air fuel Ratio (A/F) Bank 1, Sensor 1 Air fuel Ratio (A/F) Bank 1, Sensor 1 harness is open or shorted, Air fuel Ratio (A/F) Bank 1, Sensor 1 circuit poor electrical connection, Fuel pressure, Fuel injector Intake air leaks...The 1130 code is set when A/F sensor output voltage change value is not what the Engine Control Module (ECM) is expecting...The Air-Fuel ratio (A/F) sensor varies its output voltage in proportion to the air-fuel ratio. Based on the output voltage, the Engine Control Module (ECM) determines if the air-fuel ratio is RICH or LEAN and adjusts the stoichiometric air-fuel ratio. The ECM also checks the fuel injection volume compensation value to check if the A/F sensor is deteriorating or not. A/F sensor response deterioration is determined by the ratio of the A/F sensor output voltage variation and fuel trim variation.

Nice text book answer. 110,000 miles very easy miles really...no problems at all vehicle runs great , no history on t-belt or tune up I am looking for recommendations on procedures propane engine enhancement ? Compression test ? Tune up ?

Replaced sensor #1 short 0 volts, open 5 volts, fuel pressure ? Only on bank 1 ? . Both sensors are Varying . Scanner hooked up key on veh. not running bank 1 sensor 3.2 v . bank 2 sensor 0 .?

78,965

You realize the pulse would only go to the injector that needs to fire, or turn on...

Your Answer

RX 300

Looking for a Used RX 300 in your area?

CarGurus has 7 nationwide RX 300 listings starting at $3,900.

Postal Code:

Lexus RX 300 Experts

  • #1
    Rx300_21001
    Reputation
    1,960
  • #2
    John Orlando
    Reputation
    1,050
  • #3
    mrsvirtuous
    Reputation
    700
View All

Related Models For Sale

Used Lexus RX 350
26 Great Deals out of 613 listings starting at $1,645
Used Lexus RX 330
10 listings starting at $6,750
Used Toyota Highlander
14 Great Deals out of 994 listings starting at $3,800
Used Lexus RX 450h
3 Great Deals out of 31 listings starting at $15,900
Used Lexus RX 400h
15 listings starting at $7,490
Used Toyota RAV4
45 Great Deals out of 3,152 listings starting at $2,995
Used Acura MDX
24 Great Deals out of 447 listings starting at $1,300
Used Honda CR-V
39 Great Deals out of 2,674 listings starting at $2,688
Used Nissan Murano
69 Great Deals out of 1,488 listings starting at $1,588
Used Lexus NX 200t
8 Great Deals out of 124 listings starting at $31,810
Used Lexus ES 300
12 listings starting at $4,995
Used Toyota 4Runner
4 Great Deals out of 532 listings starting at $5,995
Used Lexus NX 300
147 listings starting at $46,195
Used Toyota Camry
58 Great Deals out of 2,153 listings starting at $2,750

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.