Parts for your 2002 Honda Fit-Map sensor

2002 Honda Fit (Jazz) MAP Sensor — purpose, servicing, and practical advice

Technical references including the Honda Fit/Jazz 2001–2008 Factory Service Manual (PGM‑FI section), Honda PGM‑FI technical training material, and mainstream service data platforms (e.g., Alldata/Autodata component listings for the GD1/GD2 L13A i‑DSI) confirm that the 2002 Honda Fit uses a Manifold Absolute Pressure (MAP) sensor as a primary engine load input. It’s absolutely relevant on this model.

On the 2002 Fit, the MAP sensor is a small three‑wire unit mounted on the intake manifold near the throttle body. Honda’s PGM‑FI runs a speed‑density strategy, so the MAP sensor does the heavy lifting, telling the ECU how much air the engine is pulling by measuring manifold pressure. That data, mixed with intake air temperature and engine speed, lets the ECU meter fuel spot‑on and keep the ignition timing tidy. The result is crisp throttle response, decent economy, and clean emissions — just what drivers expect from a tidy little runabout.

It’s not a scheduled replacement item, but age, heat, and vibration can make any old sensor a bit grumpy. When a MAP starts to drift or fail, the Fit can run rich, chew more fuel, hesitate off the lights, or throw a check‑engine light. Typical OBD‑II codes to watch for are P0106, P0107, and P0108. Before tossing parts, a quick check of the 5‑volt reference, earth, and signal voltage (about 0.5–1.5 V at idle, rising with throttle) is good practice.

• Tell‑tale symptoms: rough idle, black smoke, flat spots, poor economy, hard starts, and stored MAP‑related fault codes.
• Service tips: inspect the connector for corrosion or broken pins, confirm the O‑ring is supple and sealing, avoid blasting the sensor port with compressed air.
• Replacement basics: disconnect the battery, unplug the connector, remove the two screws, swap the sensor with a new O‑ring, and snug the fasteners evenly. Clear codes and perform an idle relearn (warm engine, all loads off, let it idle undisturbed for about 5 minutes).

Cleaning is rarely effective, if contamination is visible, use electronics cleaner sparingly and let it dry fully. Given the low cost and how critical it is to drivability, many workshops simply replace a suspect MAP rather than chase intermittent issues. Done right, the little Fit feels perkier, idles smoother, and sips less fuel — a win on Aussie and Kiwi roads alike.

Technical sources consulted:

• Honda Fit/Jazz Factory Service Manual (2001–2008), PGM‑FI system and MAP sensor procedures
• Honda PGM‑FI Technical Training materials on speed‑density control
• Professional service databases listing MAP sensor diagnostics and DTCs for GD1/GD2 L13A

FAQs

Where is the MAP sensor on a 2002 Honda Fit?
It’s mounted on the intake manifold near the throttle body, a small black three‑pin sensor sealed with an O‑ring. Look for the connector facing the front of the engine bay, it’s easy to reach with basic hand tools.

What are the common signs of a failing MAP sensor on this model?
Expect rough idle, sluggish acceleration, higher fuel use, and a check‑engine light. Fault codes like P0106, P0107, or P0108 often show up. If wiring and vacuum leaks check out, the sensor itself is a likely culprit.

Does the 2002 Fit use a MAF as well?
No. This generation runs Honda’s speed‑density PGM‑FI, which relies on the MAP sensor rather than a mass air flow (MAF) sensor.