What does check engine light code P055 mean? - 2005 Dodge Ram

Here is a jeep forum on code 89


https://www.jeepforum.com/forum/f11/code-89-overdrive-problems-600219/

fix the anti freeze leak --before you blow a head gasket

what your codes mean

Check Engine Light On, P0300 Random Misfire Code. A random misfire means your engine is misfiring, but that the problem is not isolated to one or two cylinders. It is jumping around in a random way from one cylinder to another. A random misfire code usually means the air/fuel mixture is running lean.

What the P0700 code means. P0700 is set when the PCM detects a malfunction in the transmission control system. This malfunction causes the vehicle to set a Check Engine Light and trigger a failsafe mode. Once the failsafe mode is set it will remain until the fault is repaired or normal operation is detected.

PO133 Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)

That's not a code. Have them read with a code reader.

If the check engine light or MIL - malfunction indicator light , or service engine soon light is on , it means there is a problem with the engine management system ! an it means it set a DTC - diagnostic trouble code in the PCM / ECM - electronic control module ! You can try resetting all you like but it's not going to stay out ! You need to have the vehicle scanned for codes an fix it ! Check Engine Code Scanner Advance Auto Parts

I couldn't find engine code for 420 but may be body code take to AutoZone for free test and code meaning

burning rich. check plugs,injectors and oxygen sensors. scan for any dtc's

no, it's not the transmission. No monitors for that. It sounds like your check engine light.
When your engine computer detects a problem with it's engine management controls, or when an emissions problem is detected, the computer will turn your check engine light and store a code or codes describing the problem.
Autozone will scan your codes for free. Then you'll know if the light means a major problem (fix right away) or a minor problem that needs attention. When it's fixed, the light will stay off.
You won't know what that light means until you get the codes read. Good luck.

po055 is h20 sensor bank 1 sensor 3 heater resistance

IF UR CHECK ENGINE LIGHT IS ON THE VEHICLE SHOULD GO ON A CODE READER SOMETIMES A LIGHT CAN COME ON 4 ONE SMALL GLITCH AND MEAN NOTHING GET THE CODE READ BEFORE SPENDING MONEY

if the check engine lught blinks it usually means you've got a lttle problem. steady could mean a bigger engine or transmission problem. My engine light came on, I had it checked it showed a huge vacuum leak. my gas cap needed replacing end of light.