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Posted on Jan 02, 2017
P1744 is probably the TC going on the way out. :(
P 340 is probably the sensor itself. Don't get the Dorman one if it is the OHV motor.
P 401 is probably a bad DPF EGR sensor.
Posted on Jul 26, 2008
If you want to clean the coolant overflow tank (bottle), disconnect the hose from the radiator, remove the screws holding the tank to the fender and remove tank from car. Reverse to install. More than likely temp sensor is bad, but you may want to check wiring back to PCM just to be sure.
Posted on May 27, 2009
Trouble Code 14 indicates that the Coolant Temperature Sensor (CTS) is reporting abnormally high readings. CTS is used to control fuel mixture, timing, idle speed, TCC and EGR operations among others. The thermistor used has a low resistance when hot, rising as the coolant cools. This error then, indicates a very low resistance in the CTS circuit.
Trouble Code 15 indicates that the Coolant Temperature Sensor (CTS) is reporting abnormally low readings. CTS is used to control fuel mixture, timing, idle speed, TCC and EGR operation, among others. The thermistor used has a high resistance when cold, lowering as the coolant warms. This error then, indicates a very high resistance in the CTS circuit.
Trouble Code 33 indicates that the Mass Air Flow (MAF) sensor is reporting more air is entering the engine than makes sense based on RPM and TPS. The MAF sensor produces a frequency output; around 30 Hz at idle to 150 Hz under acceleration. The frequency varies proportionally to airflow. The ECM monitors the frequency and thus determines airflow into the engine. Typical idle MAF is 5 to 7 grams per second.
Posted on Feb 18, 2010
EOBD Code: P0183 - Fault location: Fuel temperature sensor A - high input. Probable cause: Wiring short to positive, fuel temperature sensor bad, ECM bad.
Posted on Sep 12, 2010
SOURCE: Hi, I've sent my toyota
To have so many different codes at the same time indicates that the first place to start looking is the wiring harness itself. Locate the MAP (manifold air pressure sensor - code 31) and IAT (inlet air temperature sensor - code 24) connections. Disconnect and reconnect each sensor a few times and check that the connecting socket and pins are clean and free of corrosion - the codes indicate intermittent breaks. Check all fuses are clean and well mounted. Examine wiring harness for chafing, abrasion and signs of wear. Any intervening connections between the wiring harness and electronic control unit (ECU) need to be checked over and should be free of oily grime.
Posted on Nov 17, 2010
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