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P1506 Diagnostic Code on 2000 Ford Taurus 3.0L DOHC - How to Fix Fast Idle and Reset ECU

Model: 2000 Taurus 3.0L DOHC Fault Code: P1506 Posted: 2010-07-17 20:26

My friend recently had a diagnosis for a fast idle issue on her 2000 Ford Taurus with the 3.0L DOHC engine. The shop identified multiple incomplete fault codes, and after performing repairs, they advised driving approximately 100 miles to reset the engine control module (ECM). After following this procedure, the vehicle started showing a P1506 code — which indicates an issue with the intake manifold absolute pressure (MAP) sensor or related circuit. The car still runs with an idle speed between 1500 and 2000 RPM, which is significantly higher than normal. I'm assisting her because the Ford dealership is both expensive and unresponsive for diagnosis and repair. Can anyone confirm what this P1506 code means on a 3.0L DOHC Taurus? What steps should be taken to resolve it effectively?

Related fault codes
P1506
Comments (3)
Anonymous 2010-07-18 12:16

So the issue hasn't been resolved yet — the P1506 code persists after driving. The original fix didn't work. 'Stupid is as stupid does' — Forest Gump

Anonymous 2010-07-18 14:25

I'm seeking advice, not confrontation. As a DIY mechanic with experience on older engines like the Chevrolet 350 and Ford 302, I find modern DOHC fuel-injected systems with multiple sensors much more complex. Thanks for any insights or troubleshooting tips.

Anonymous 2010-07-18 16:05

Could you please share what specific repairs were performed at the shop? This would help determine if the P1506 code is related to a sensor, wiring, or ECU calibration issue.