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.
2002 Freightliner Sprinter 2500 L5-2.7L DSL TurboFACTORY OEM SERVICE PROCEDURE
Removal and Replacement
Remove/install hot film mass air flow sensor
ENGINE
612.981 in MODEL 902.6, 903.6, 904.6, 905.6 with CODE (MD1) Low-pollutant vehicle according to EC Class 1
ENGINE 612.981 in MODEL 902.6, 903.6, 904.6, 905.6 with CODE (MS5) Low pollution engine according to EC category 2
ENGINE 612.981 in MODEL 902.6, 903.6, 904.6, 905.6 with CODE (MF8) Low-emission engine conforming to EU 3 group 3
ENGINE 612.981 in MODEL WD1XD141, WD1XD241, WD1XD341, WD1XD441, WD1XD541, WD1XD641, WD1XD741,
WD2YD141, WD2YD241, WD2YD341, WD2YD441, WD2YD541, WD2YD641, WD2YD741,
WD5WD141, WD5WD241, WD5WD341, WD5WD641, WD5WD741
1 Hot film mass air flow sensor
2 Connector
3 Air intake hose
4 Air cleaner housing
5 Screw
6 Hose clamp
Remove, Install
1 Detach air intake hose (3) at hot film mass air flow sensor
2 Unplug connector (2) at hot film mass air flow sensor
3 Remove hot film mass air flow sensor (1) at air cleaner housing (4).
4 Install in the reverse order
ENGINE
612.981 in MODEL 902.6, 903.6, 904.6, 905.6 with CODE (MD1) Low-pollutant vehicle according to EC Class 1
ENGINE 612.981 in MODEL 902.6, 903.6, 904.6, 905.6 with CODE (MS5) Low pollution engine according to EC category 2
ENGINE 612.981 in MODEL 902.6, 903.6, 904.6, 905.6 with CODE (MF8) Low-emission engine conforming to EU 3 group 3
ENGINE 612.981 in MODEL WD1XD141, WD1XD241, WD1XD341, WD1XD441, WD1XD541, WD1XD641, WD1XD741,
WD2YD141, WD2YD241, WD2YD341, WD2YD441, WD2YD541, WD2YD641, WD2YD741,
WD5WD141, WD5WD241, WD5WD341, WD5WD641, WD5WD741
1 Hot film mass air flow sensor
2 Connector
3 Air intake hose
4 Air cleaner housing
5 Screw
6 Hose clamp
Remove, Install
1 Detach air intake hose (3) at hot film mass air flow sensor
2 Unplug connector (2) at hot film mass air flow sensor
3 Remove hot film mass air flow sensor (1) at air cleaner housing (4).
4 Install in the reverse order
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.