Parts for your 1999 Mitsubishi Pajero-Camshaft sensor

1999 Mitsubishi Pajero Camshaft Sensor: What it is, where it lives, and when to replace it

Based on factory documentation and parts catalogues, the 1999 Mitsubishi Pajero does use a camshaft position sensor on its petrol engines, and some diesel variants do not have a separate cam sensor. The Mitsubishi Pajero Factory Service Manual for late 1990s models (Engine Electrical sections covering CMP/Cam Angle Sensor) describes a camshaft signal for the 6G72/6G74 petrol engines—either as a discrete sensor on the cylinder head (commonly on 6G74) or built into the distributor as a cam angle sensor (typical for 6G72). Mitsubishi’s global ASA parts catalogue also lists a camshaft position sensor for petrol variants and notes the integrated cam angle sensor inside the distributor on certain models. For the 4M40 2.8 diesel, Mitsubishi’s engine control documentation details crankshaft and pump timing sensors rather than a standalone camshaft sensor. So, for 1999 Pajero petrol models, a camshaft sensor is relevant and fitted, for many 2.8 diesels, it’s not a separate item.

On a 1999 Pajero petrol, the camshaft sensor tells the ECU exactly where the camshaft is in its rotation. That lets the ECU fire spark and inject fuel at the right moment, keeps cold starts tidy, and helps detect misfires. If the signal drops out, expect hard starting, rough idle, flat spots, or the ECU jumping into limp mode. Common fault codes include P0340 and P0341, and the check engine light will usually chime in.

Location depends on the engine. On many 6G74 3.5L V6s it’s a small, two- or three-pin sensor mounted to the head near a cam gear. On 6G72 3.0L distributor engines, the “cam sensor” is built into the distributor assembly (often called a cam angle or crank angle sensor there). Either way, it’s not a scheduled service item, but it’s smart to inspect the plug and loom at major services—heat and oil weep can make connectors brittle.

• Typical symptoms: long crank, misfire under load, poor fuel economy, codes P0340/P0341.
• Quick checks: inspect the connector for oil, broken tabs, and green corrosion, verify wiring isn’t chafed on the cam cover.
• Replacement tips: disconnect the battery, use a quality sensor with the correct O-ring, torque the small mounting bolt(s) correctly (light hand torque—don’t overdo it), and clear codes after fitting. For 6G72 distributor types, replacing the distributor or internal sensor may require timing alignment—mark positions before removal.

There’s no need to pre-emptively swap a healthy sensor, but if the Pajero throws a cam sensor code and the wiring checks out, replacement is usually straightforward and restores crisp starting and smooth running. For diesel owners with the 4M40, a separate cam sensor generally isn’t fitted, diagnosis will focus on the crank sensor and injection pump timing signals instead.

Popular questions

Where is the camshaft sensor on a 1999 Pajero?
On 6G74 petrol V6s it’s usually bolted to the cylinder head near a cam gear or behind an upper timing cover. On 6G72 engines with a distributor, the cam signal is generated inside the distributor (often called a cam or crank angle sensor). Many 2.8 4M40 diesels don’t have a separate camshaft sensor at all.

What are the tell-tale signs the camshaft sensor is failing?
Long cranking when hot or cold, rough idle, hesitation, poor fuel economy, and a check engine light. Diagnostic trouble codes P0340 or P0341 are common. If those show and wiring is fine, the sensor is a prime suspect.

Can a camshaft sensor be cleaned or should it be replaced?
If oil has wicked into the plug, cleaning the connector can help temporarily. However, internal sensor faults or damaged wiring call for replacement. Always fix oil leaks that contaminate the connector so the new sensor isn’t short-lived.