HERE IS THE DIFINTION
Automatic transmission torque converter clutch stuck off.
Possible causes
- Low transmission fluid level
- Dirty transmission fluid
- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted
- Transmission internal mechanical problem
SOURCE: OBD MIL STATUS RESULT
Po1860 will cause a false p0741. The diagnostics for p0741 requires that
po1860 is not a current code.
Po1860 is the Torque Converter Clutch circuit.
It means that the converter isn't locking up. Your mileage will suffer, but running without the converter locked will cause excessive heat and eventually will kill the transmission...that would be what i'd be most worried about...
there could be a number of reasons for this...could be as simple as the tcc solenoid, or as complex as the converter itself failing...which would mean you'd have to drop the cradle and seperate motor and trans to replace the converter...
Testimonial: "Yes very helpful. Thanks for the info. It will help me a decision whether or not to keep it or trade it in. "
SOURCE: OBD 2 code showing 301
P0300, P0301, and P0302 are all misfire codes (cylinders #1 and #2, and
a multiple/random misfire). The only time I've heard of this being
related to a crank sensor is if the sensor were loose. Furthermore, a
crank sensor issue should affect all cylinders equally. So I'd expect
you'd have the P0300 only, or all the codes you have plus P0303 and
P0304 (and P0305 and P0306 if a V6).
You should continue checking your secondary ignition system. Presuming
the wires and plugs made no difference in the codes or condition, check
the coil. You'll want to do your checking when the problem is
occurring. Perhaps even mist the wires and coil with water to see if
you can see a spark jumping. If you do indeed see a spark jumping,
that is the location of your problem.
Another strategy you can use is to take the #1 and #2 plug wires (if
accessible) off the plugs and just set them back in place without
clipping back onto the plugs. Then, start the car, and gradually pull
the wire(s) off the plug(s). The spark should come out of the end of
the wire onto the plug. If it comes out of the coil or the side of the
wire, then the problem is in the location of the spark.
If you're unable to find a secondary ignition problem, then you should
begin investigating whether you have a fuel delivery or internal engine
problem causing the misfire. Most engine issues will show up with a
compression test. If you indeed are only misfiring on cylinders 1 and
2, you can swap those injectors with the others to see if the misfire
follows the injectors.
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