My 2001 dodge durango's check engine light is on. I got the code p0307 to come up. the car is running fine, what does the code mean?

That's means you have a malfunction on the system. Must be take to a dealer for check up. Can be the heater element is bad, unplug or wire is shorting out the circuit.

There may be a fault code or codes stored, though. Have an engine scan done for trouble codes as a first step in diagnosis. If no codes are present, I would start by investigating the idle circuit-clean the throttle body and have the IAC (idle air control) tested for proper operation. Good luck.

DTC P0301 & P0307 Code - Cylinder #1 & #7 Misfire Detected
A P0301 (also P0307) code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #1 (also cyl #7).

Symptoms may include the engine may be harder to start, the engine may stumble / stumble, and/or hesitate or other symptoms may also be present. Other tips to solve it in the previous fault code link.

A code P0301 and P0307 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer

Hope this helps and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

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http://www.obd-codes.com/trouble_codes/dodge/

P0201?? Injector #1 Ctrl Circ /
P0207 Injector #7 Ctrl Circ /

P0300?? Multiple Cylinder Misfire
P0301?? Cylinder #1 Misfire
P0307?? Cylinder #7 Misfire
are the codes start with the basics inspect plugs wires cap rotor and if all checks out do a compression test

P0138 (M). O2 Sensor Circuit High Voltage (Bank 1 Sensor 2) ..... P0307 (M). Cylinder # 7 Misfire. Misfire detected in Cylinder # 7.

bank 1 sensor 2 is the left downstream sensor (1/2) is located in the exhaust downpipe just after the mini-catalytic convertor, and before the main catalytic convertor. Now the meaning of this is that your not getting any 12+/12- heating on sensor, which means voltage is supplied to heat sensor up. You have a O2 sensor heater relay, but not getting problem with 2/2 sensor tells me you need to check/inspect the wiring for 1/2 sensor, open wiring for 1/2 sensor and inspect

A P0307 code means that the the car's computer has detected that one of the engines
cylinders is not firing properly. In this case it's cylinder #7.


Symptoms may include:

• the engine may be harder to start
• the engine may stumble / stumble, and/or hesitate
• other symptoms may also be present

A code P0307 may mean that one or more of the following has happened:

• Faulty spark plug or wire
• Faulty coil (pack)
• Faulty oxygen sensor(s)
• Faulty fuel injector
• Burned exhaust valve
• Poor compression
• Defective computer

I believe all the Mopar OBDC codes are the same. A list of the 2001 codes were posted on a PT Cruiser site here: 2001 Chrysler codes

Your error says the throttle position sensor and MAP sensor disagree with each other

What have you done and/or replaced so far? I would start with checking the battery (12.6 cold), check the charging system (13.5 to 15 volts), check the fuel-line pressure. Does the engine light come on at all? If so have the codes read, this might help put you in the right direction. If the light isn't coming on then the problem should be mechanical. Like the fuel pump, gas cap, vacuum line, or IAC..