Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2001SABLE LS, 4D SEDAN, 3.0 U, AX4SREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEVACUUM DIAGRAMSINTRODUCTIONPROTOCOL 3 CODE DESCRIPTIONS
2001 Mercury Sable LS, 4D Sedan, 3.0 U, AX4S
Protocol 3 Code Descriptions
2001 Mercury Sable LS, 4D Sedan, 3.0 U, AX4SSECTION Protocol 3 Code Descriptions
Position 1 = Model Year
- Indicates last digit of model year in which calibration was first introduced.
- 0
2000 - 1
2001 - 2
2002
Position 2 = Vehicle Code
- Identifies vehicle line.
- AJ
Escort & ZX2 - AK
Focus - DD
Sable & Taurus - FB
Crown Victoria & Grand Marquis - JC
Continental - LQ
LS - SR
Thunderbird - VC
Town Car - ZE
Mustang - ZN
Cougar
Position 3 = Transmission Code
- Identifies transmission type.
- 1
Automatic Transmission - 2
Manual Transmission
Position 4 = Unique Calibration
- The Emissions/CAFE/CO2 Compliance Department is responsible for assigning these calibration codes. Unique calibration identifications are assigned to cover similar vehicles to differentiate between tires, drive configurations, final drive ratios and other calibration-significant factors. These 2 characters are selected by an analyst to provide identifiable information unique to each calibration. For example; using the number 2 to denote a 2-valve engine versus using the number 4 to denote a 4-valve engine, provides an easily identifiable difference.
Position 5 = Fleet Code
- Identifies fleet calibration code.
- 0
Certification (U.S. 4K, final sale in export markets) - 1
HGDE/Dyno - 2
Fast AMA, U.S - 3
ADP U.S. - 4
Not assigned - 5
Not assigned - 6
Evaporative emissions - 7
MACAA - 8
On-board diagnostics - 9
Not assigned
Position 6 = Certification Regions
- Certification region. Lists the lead region where multiple regions are included in one calibration.
- 5
U.S. fifty states - A
U.S. Federal (including altitude, may include Canada or Mexico) - B
U.S. California standard (includes U.S. Green States; Maine, Massachusetts, New York and Vermont) - C
Canada - D
China - E
European Community (Austria, Belgium, Denmark, Finland, Germany, Greece, Ireland, Luxembourg, Netherlands, Portugal, Spain, Sweden, United Kingdom) - F
Extended European Community (E plus Croatia, Czech Republic, Estonia, Hungary, Norway, Poland, Romania, Russian Federation, Slovakia, Slovenia, Switzerland, Yugoslavia) - G
Gulf Cooperative Council - H
Hong Kong - J
Japan - K
Korea - L
Malaysia - M
Mexico - N
New Zealand - P
Australia - Q
South America (Brazil) - S
Singapore - T
Taiwan - U
South America (unleaded fuel) - V
Vietnam - X
ROW (rest of world) - Y
Military - Z
Israel
Position 7 = Revision Level
- The revision level will advance as revisions occur. Not printed on label.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.