Parts for your 2008 Honda Accord-Map sensor

2008 Honda Accord MAP sensor — what it does and how to look after it

Technical sources confirm the 2008 Honda Accord is fitted with a Manifold Absolute Pressure (MAP) sensor. The Honda Factory Service Manual for the 2008 Accord (PGM‑FI section) lists DTCs P0106–P0108 specifically for the MAP circuit, the Honda Electronic Parts Catalogue shows MAP sensor part numbers for both 2.4L K‑series and 3.5L J‑series engines (e.g., 37830‑RNA‑A01 and supersessions), and major aftermarket catalogues from Denso and NGK/NTK catalogue a MAP sensor for this model year.

On the 2008 Accord, the MAP sensor is a small, solid‑state pressure sensor mounted on or near the intake manifold. Its job is to read absolute pressure in the manifold so the ECU can work out engine load, then fine‑tune fuel delivery and ignition timing. Honda’s PGM‑FI strategy on these engines is “speed‑density”, which relies on the MAP signal (plus intake air temp and engine speed) rather than a traditional MAF. That’s why a healthy MAP signal is crucial for crisp throttle response, smooth idle, and good fuel economy on Aussie and Kiwi roads.

There’s no fixed service interval for the MAP sensor, but it’s smart to include a quick check during routine servicing. Make sure the electrical connector is clean and the wiring isn’t chafed, and confirm the sensor port isn’t blocked by oil vapour residue. If cleaning is needed, use quality electronics cleaner sparingly and avoid soaking the sensor element.

• Common symptoms of a crook MAP sensor: rough idle, sluggish take‑off, increased fuel use, sootier exhaust, and a check‑engine light with codes P0106, P0107, or P0108.
• Basic replacement: disconnect the battery (optional but helps reset trims), unplug the connector, remove the two fasteners, lift the sensor and O‑ring, then install the new unit with a fresh seal. Tighten the screws snugly to spec per the service data, reconnect, clear any codes, and let the ECU relearn with a short drive.

Owners are best off choosing an OEM‑quality sensor, as cheapies can drift and cause hunting idle or poor economy. After refitting, a brief idle learn and a few kilometres of mixed driving will let the ECU settle fuel trims. If issues persist, scan live data to confirm MAP kPa tracks with throttle and vacuum, and check for intake leaks or PCV problems that can mimic a sensor fault.

FAQs

Does a 2008 Honda Accord have a MAP or a MAF sensor?
It runs a MAP sensor. Honda’s PGM‑FI on the 2008 Accord uses a speed‑density strategy, so the ECU calculates airflow from MAP, intake air temperature, and RPM rather than relying on a MAF. That’s normal for many Hondas of this era.

What are the signs the MAP sensor is failing on a 2008 Accord?
Tell‑tales include a check‑engine light with P0106–P0108, rough idle, hesitation off the line, higher fuel use, and sometimes stalling. Live data will often show implausible MAP readings that don’t change with throttle.

Can they keep driving with a bad MAP sensor?
It may still run, but performance and economy will suffer, and it can foul plugs or stress the catalytic converter if it runs too rich. Best to diagnose and sort it promptly to avoid bigger bills.