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What causes engine code P1151 in a 2002 Ford Taurus?

Anonymous

∙ 14y ago

Updated: 10/26/2022

Technical DescriptionLack of HO2S-21 Switch, Sensor Indicates Lean What does that mean?A Heated Exhaust Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time. SymptomsYou will likely not notice any drivability problems. CausesA code P1151 may mean that one or more of the following has happened: Electrical:

Short to VPWR in the harness or HO2S
Water in the harness connector
Open/shorted HO2S circuit
Corrosion or poor mating terminals and wiring
Damaged HO2S
Damaged PCM

Fuel System:

Excessive fuel pressure
Leaking/contaminated fuel injectors
Leaking fuel pressure regulator
Low fuel pressure or running out of fuel
Vapor recovery system

Induction System:

Air leaks after the MAF
Vacuum Leaks

PCV system:

Improperly seated engine oil dipstick

EGR System:

Leaking gasket
Stuck EGR valve
Leaking diaphragm or EVR

Base Engine:

Oil overfill
Cam Timing
Cylinder compression
Exhaust leaks before or near the HO2S(s)

Possible Solutions

See the above list of causes and go from there.

Wiki User

∙ 14y ago

What else can I help you with?

What is the cause of a P1151 trouble code on a 2002 Ford Taurus?

Trouble Code P1151 means:Lack of HO2S bank 2,sensor 1 switches,sensor indicates lean

2002 Ford Explorer P1151 check engine light?

Click the link.

What size engine does the 2002 Ford Taurus have?

The 2002 Ford Taurus has a V6 engine.

What is the base engine size of the 2002 Ford Taurus?

The 2002 Ford Taurus has a 3.0 L base engine size.

How many horsepower does the engine in the 2002 Ford Taurus have?

The 2002 Ford Taurus's engine produces 155 hp @ 4900 rpm.

How much torque does the engine in the 2002 Ford Taurus have?

The 2002 Ford Taurus's engine produces 185 ft-lbs. @ 3950 rpm.

Where is the orifice tube located on an 2002 Ford Taurus DOHC engine?

2002 ford taurus where is the orifice tube located

How do you Replace the speed sensor on a 2002 Ford Taurus with a V6 engine?

where is the speed control senor located on a 2002 ford taurus

How many engine choices were there for the 2002 Ford Taurus sel?

On a 2002 Ford Taurus : As far as I know the SEL trim level just had the 3.0 liter " Duratec" DOHC , V6 engine

How do you get enough slack in the belt to get it back on the engine of a 2002 Ford Taurus?

remove engine....move...replace engine

Which is the engine light on a 2002 Ford Taurus?

According to page 10 in the 2002 Ford Taurus Owners Manual (see below), the 'Service Engine Soon" warning light is the picture of an engine in the lower left hand corner of the dash / instrument panel.

How many cylinders in a 2002 Ford Taurus?

In a 2002 Ford Taurus : There are ( 6 engine cylinders ) You could have the 3.0 liter " Vulcan " V6 engine ( or its flex fuel version ) or You could have the 3.0 liter " Duratec " Dual Over Head Cam V6 engine

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