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Master
1,796 Answers
- Posted on Dec 13, 2010
Re: 1994 dodge van error code 12 17 van has no power at...
Hi!!
- Code 12 just means that the battery input to PCM has been disconnected within the past 50 Key On cycles. After the 50th. Key On cycle, the code would go away.
- Code 17 means that the thermostat is probably stuck open because the coolant temperature remains too low during vehicle travel. A defective temp. sensor could also send the wrong information to the PCM, which in turn makes the air/fuel mixture too rich and makes the vehicle stall.
Besides checking the two items above, also inspect the following:
- Fuel Pump output pressure, the pressure with the Key On, engine OFF should be 53 - 57 psi. If pressure is below range, replace fuel filter and test again. If pressure still low, squeeze shut return hose while someone turns the ignition key to the ON position, if pressure increases, replace fuel pressure regulator. If pressure still not within range, replace Fuel Pump.
- Vacuum hoses for cracks, disconnected or broken lines.
- Sticking EGR Valve
Replace Air Filter and PCV valve. These are regular maintenance items and should be replaced periodically.
Good luck!! Keep me posted.
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