Parts for your 2004 Honda Cr-v-Map sensor

2004 Honda CR‑V MAP Sensor — What It Does and How to Look After It

Technical confirmation: The 2004 Honda CR‑V (K24A1 petrol) is fitted with a Manifold Absolute Pressure (MAP) sensor. This is documented in the Honda Service Manual for 2002–2004 CR‑V EFI systems and the Honda Electronic Parts Catalogue, which lists the MAP sensor (commonly P/N 37830‑PNC‑003) mounted on the intake manifold. Fault tracing in these sources also references OBD‑II codes P0106, P0107 and P0108 for MAP performance, low and high voltage, respectively.

The MAP sensor’s job is to report intake manifold pressure to the ECU, which then calculates engine load and decides how much fuel and ignition timing to serve up. On the 2004 CR‑V, this speed‑density setup means there’s no MAF to worry about, the MAP does the heavy lifting for fuelling accuracy from idle to motorway speeds.

When the MAP sensor ages, gets oily, or its vacuum path is blocked, the CR‑V can become thirsty and a bit doughy off the line. Typical signs include:

• Rough idle, hesitation, or flat spots under acceleration
• Higher fuel use and exhaust smell a bit rich
• Check Engine Light with codes P0106, P0107, or P0108

As part of a sensible service routine (say every 60,000–100,000 km or if drivability changes), it’s worth inspecting and, if needed, cleaning or replacing the MAP sensor. Under the bonnet, look for it on the intake manifold near the throttle body—small sensor body with a plug and an O‑ring seal.

1. Disconnect the battery negative to be safe.
2. Unplug the sensor connector, check pins for corrosion or moisture.
3. Remove the mounting screws carefully.
4. Inspect the O‑ring, replace if flattened, brittle, or torn.
5. If reusing, clean only with electronics‑safe MAP/MAF cleaner—avoid harsh solvents and don’t poke the sensing port.
6. Refit and tighten the screws to workshop spec (typical M6 fasteners are around 8–10 N·m—use the Honda manual figure if you have it).
7. Reconnect the plug, clear any codes, and road test.

Good practice tips: make sure the PCV system isn’t flooding the manifold with oil vapour, keep the air filter fresh, and check for vacuum leaks that can make the MAP readings look odd. If the ECU still throws MAP codes after cleaning and checks, replacement is usually the most time‑effective fix.

Popular questions about 2004 Honda CR‑V MAP sensors

Where is the MAP sensor on a 2004 CR‑V?
It’s mounted on the intake manifold, close to the throttle body. Look for a small rectangular sensor with a single electrical connector and two small mounting screws. Access is straightforward with basic hand tools.

What fault codes point to a bad MAP sensor?
Common codes are P0106 (MAP range/performance), P0107 (MAP circuit low), and P0108 (MAP circuit high). Before replacing the sensor, check the connector, wiring, vacuum leaks, and the O‑ring seal, as these can trigger the same codes.

Is it OK to drive with a faulty MAP sensor?
The CR‑V will usually run in a limp strategy but may use more fuel and feel sluggish. Short trips to a workshop are generally fine, but it’s best to sort it promptly to avoid poor economy and potential catalyst stress from rich running.