Parts for your 2011 Honda Stream-Map sensor

2011 Honda Stream MAP sensor — does it have one, what it does, and how to look after it

Yes, the 2011 Honda Stream uses a MAP (Manifold Absolute Pressure) sensor. This is documented in Honda’s factory service literature for the RN6–RN9 Stream (PGM‑FI, Engine Control – MAP Sensor inspection/replacement procedures) and reflected in the Honda Electronic Parts Catalogue for RN6/RN8 models, which lists a MAP sensor for the R18A and R20A i‑VTEC engines. The same engine control strategy is described in the 2006–2011 Civic R18A service manual (shared engine family), including diagnostic trouble codes P0106, P0107 and P0108 for MAP signal range and performance. These technical sources confirm the MAP sensor is fitted and critical to engine management on the 2011 Honda Stream.

On a 2011 Honda Stream, the MAP sensor is a key part of the PGM‑FI system. It measures the absolute pressure inside the intake manifold and tells the ECU how much air the engine is actually drawing. From that, the ECU works out engine load, trims fuelling, and tweaks ignition timing, keeping things smooth whether it’s idling at the lights or overtaking on a country road. Because Honda’s R‑series engines use a speed‑density strategy (rather than a big MAF in the intake snorkel), the MAP sensor does the heavy lifting for accurate air‑mass calculation. When it’s healthy, owners get easy starts, tidy idle, good economy, and clean emissions. When it’s not, expect a rough idle, flat spots, poor fuel use, or the MIL lighting up with a P0106/P0107/P0108 code.

It’s not a scheduled replacement item, but it’s smart to include MAP checks during major services, especially if the vehicle does lots of short trips or has seen a dusty life under the bonnet. Replacement is a simple driveway job for most: disconnect the battery if preferred, unplug the 3‑pin connector, undo the retaining fastener, ease the sensor out, and mind the O‑ring. Refit with a fresh O‑ring if it’s hard or nicked, seat it squarely, and tighten the fastener to factory spec. No sealant needed. A quick health check via scan tool (live kPa readings that respond to throttle) is the cherry on top.

• Keep the intake tract airtight: perished vacuum hoses or a loose throttle‑body gasket will skew MAP readings.
• If cleaning is needed, use electronics‑safe or MAF‑safe cleaner only, avoid harsh solvents that can damage the sensing element.
• Check the reference 5 V, ground, and signal pins if diagnostics point to wiring rather than the sensor itself.
• After replacement, clear fault codes and let the ECU relearn trims with a short, varied‑load drive.
• If the Stream has an aftermarket intake, ensure it hasn’t introduced vacuum leaks that confuse the MAP.

• Where is the MAP sensor on a 2011 Honda Stream?

  It sits on the intake manifold near the throttle body. It’s a small, black, 3‑pin sensor secured with a single fastener and sealed by an O‑ring. Access is typically from the top of the engine bay with the engine cover off.

• What fault codes point to a bad MAP sensor on this model?

  Common codes are P0106 (MAP range/performance), P0107 (MAP low input), and P0108 (MAP high input). These can be caused by a failed sensor, wiring/connector issues, or vacuum leaks affecting manifold pressure.

• Can the MAP sensor be cleaned, or should it be replaced?

  Light contamination can sometimes be cleaned with electronics‑safe spray. If readings remain erratic, the housing is cracked, or the O‑ring won’t seal, replacement is the reliable fix. Always verify with live data before calling it.