P06ED

Engine RPM Output Circuit Low

Same as P0654 with the output line shorted to ground. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.

Check engine light: Yes
Emissions related: No
Repair difficulty: easy

Symptoms

Check engine light on
Possible limp mode or no-start
Multiple follow-up faults across modules
Reset/relearn may be needed after repair

Common causes

Ordered by how often each turns out to be the cause.

Output line shorted to groundCommon
Connector pins corroded - high contact resistanceLess likely
Harness chafing through insulationLess likely

Parts involved

Engine Rpm Output

P06ED is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.