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Joyce Urich Posted on Oct 01, 2008
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System to lean codes 1131 171 - Mystique Mercury Cars & Trucks

  • Joyce Urich
    Joyce Urich Oct 02, 2008

    what do i look for to fix the problem of system to lean

  • Marvin
    Marvin May 11, 2010

    What is your question??

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1 Answer

Marvin

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  • Mercury Master 85,242 Answers
  • Posted on Oct 02, 2008
Marvin
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Joined: Jun 20, 2008
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You need to replace the O2 sensors according to the codes definition in the repair manual

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0helpful
2answers

What to do for code P0174?

System Too Lean (Bank 2) What the P0174 code means. Code P0174 indicates that there is a lean condition detected by the Engine Control Module (ECM). A lean condition will be created if there is too much air, and not enough fuel, in the air fuel ratio (AFR).
https://www.yourmechanic.com/article/p0174-obd-ii-trouble-code-system-too-lean-bank-2-by-blake-griffin
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Im getting P0171 code- lean .

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0helpful
1answer

4 Codes in computer

code p0128 indicates a mechanical fault ( could be the thermostat stuck open)
code p0174 -system too lean -bank2 ===causes --intake /exhaust leak--fuel pressure/pump--injectors--AIR system--hose connection/s
code po171 refers to system too lean bank 1 same as po174 with the HO2S sensor being the culprit. As to all being related . only by way of the o2 sensors
code p0442 is not connected to the first 3 as it is in a different section of the fuel system
0helpful
1answer

Engine light on

P0171 ; Fuel Trim System Lean (Bank 1)
P0174; Fuel Trim too Lean (Bank 2)
fuel trim is system to modify injector pulse if system go lean it will go rich when the system is too much lean and is max.rich it code
look for 02 sensor bank 1 and 2 data
hope it helps
3helpful
1answer

Engine check light on error code 1 is P0171 system too lean bank 1 error code 2 is P0174 system too lean bank 2

P0171 system too lean bank 1
P0174 system too lean bank 2
links to information on the codes

it means that the O2 sensors in your vehicle detected a lean condition in their respective banks. this could be caused by a dirty MAF (mass air flow) sensor or a vacuum leak downstream from the MAF sensor

sometimes you can clean the MAF with electronics cleaner or brake cleaner but be sure to take it off the vehicle first. be careful not to damage the MAF while spraying the cleaner, and allow it to dry completely before installing it on the vehicle.
0helpful
1answer

What do the codes 1128, 1129, 1133, and 1134 mean on my Porsche Boxter 2001?

code P1128 02 sensor bank 1 lean
code P1129 02 sensor bank 1 lean to limit
code P1133 02 sensor bank 2 lean
code P1134 02 sensor bank 2 lean to limit

fuel system is lean.
1helpful
1answer

Failed OBDII Diagnstic trouble codes P0761 and O1744 What does this mean?

code P0761-
Possible causes - Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid 3 valve
- Shift solenoid 3 valve harness or connectors
- Shift solenoid 3 valve circuit is open or shorted
P0761 FORD Description Shift solenoid valve 3 is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Gears will then be shifted to the optimum position. When is the code detected? The P0761 code is detected when the ECM has detected a mechanical fault with the solenoid energized, valve stuck off code O1744- is not a code these are the ones I have found that come close
P0174 1999 FORD WINDSTAR Fuel Injection System Too Lean Bank 2 P0174 2000 FORD WINDSTAR Fuel Injection System Too Lean Bank 2 P0174 2001 FORD WINDSTAR Fuel Injection System Too Lean Bank 2 P0174 2002 FORD WINDSTAR Fuel Injection System Too Lean Bank 2 P0174 2003 FORD WINDSTAR Fuel Injection System Too Lean Bank 2 P0174 FORD Fuel Injection System Too Lean Bank 2
12helpful
1answer

Generic code PO171 system 2 lean bank 1 generic

This can be caused by a faulty mass air flow sensor
14helpful
2answers

4 codes P0171,P0174,P2195,P2197

Hi
171 system too lean
174 system too lean
2195 - 02 ozygen sensor signal stuck lean Bank1 Sensor 1
2197- 02 ozygen sensor signal stuck lean Bank 2
Sensor 1
The 2 front 02 sensors are located on the front of
the exhaust manifold.
Should solve problem and increase gas mileage.
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