C161E on Mitsubishi

Mitsubishi active center differential pump or relay fault

Severity: Severity not verified — if the car runs badly, have it inspected

We read only owner reports, which say an AWD warning comes on and some were told the cause is the ACD pump; no document tells us how drivable it is.

Source: how we rate severity

This page covers only what differs on Mitsubishi. For what C161E means, the ranked causes and the test order, see the C161E guide.

What's different on Mitsubishi

Mitsubishi

2008–2010 · Lancer Evolution
Supported by vehicle data
Evolution owners report C161E with the AWD light. Owner complaints only.
2009–2011 · Lancer
Supported by vehicle data
Lancer and Ralliart owners report the same. Owner complaints only.

Sources and review

NHTSA complaint ODI 10640971: 2008 Mitsubishi Lancer Evolution C161E — NHTSA Office of Defects Investigation
NHTSA complaint ODI 10510612: 2010 Mitsubishi Lancer Ralliart C161E — NHTSA Office of Defects Investigation
NHTSA complaint ODI 10633477: 2011 Mitsubishi Lancer C161E — NHTSA Office of Defects Investigation

Last reviewed: October 15, 2026
Written by: Saurabh K.
Editorial review: Pending
Technician review: Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error