Obd ii code c 0291 - 2002 Chevrolet TrailBlazer

codes are OBD ll and are available on line free
P0118 OBD-II:Engine Coolant Temperature Sensor 1 Circuit High

copy and paste
https://repairpal.com/obd-ii-code-chart
https://repairpal.com/obd-ii-code-p0118

codes are OBD codes and are available on line free. copy and paste

https://www.yourmechanic.com/article/p0305-obd-ii-trouble-code-cylinder-5-misfire-detected-by-jay-safford

https://www.yourmechanic.com/article/p0446-obd-ii-trouble-code-evaporative-emission-control-system-vent-control-circuit-malfunction-by-spencer-clayton

https://repairpal.com/obd-ii-code-p0446


https://www.yourmechanic.com/article/p0420-obd-ii-trouble-code-catalyst-system-efficiency-below-threshold-bank-1-by-jamahl-walker

https://www.obd-codes.com/p0420

these all related to ignition coil and PCM
codes are OBDll and are available on line free



https://www.yourmechanic.com/article/p2302-obd-ii-trouble-code-ignition-coil-a-secondary-circuit-by-spencer-clayton

https://www.yourmechanic.com/article/p2305-obd-ii-trouble-code-ignition-coil-b-secondary-circuit-by-spencer-clayton

https://www.yourmechanic.com/article/p2308-obd-ii-trouble-code-ignition-coil-c-secondary-circuit-by-jamahl-walker

https://www.yourmechanic.com/article/p2311-obd-ii-trouble-code-ignition-coil-d-secondary-circuit-by-jay-safford

https://www.yourmechanic.com/article/p2314-obd-ii-trouble-code-ignition-coil-secondary-number-5-circuit-condition-by-jason-unrau

https://www.yourmechanic.com/article/p2317-obd-ii-trouble-code-ignition-coil-f-secondary-circuit-by-andrew-quinn

p0016
P0016 OBD II Trouble Code Camshaft Position Camshaft Position Correlation...
p0128
P0128 OBD II Trouble Code Coolant Thermostat Coolant Temperature Below...
p0206
P0206 OBD II Trouble Code Injector Circuit Malfunction Cylinder 6...
p0306

P0306 OBD II Trouble Code Cylinder 6 Misfire Detected

p0436

P0463 OBD II Trouble Code Fuel Level Sensor Circuit High Input...

Here's a link for codes P0446,P0443. https://www.obd-codes.com/p0446 Here's the link for P0403. P0403 Exhaust gas recirculation EGR circuit malfunction Here's code P0135 P0135 OBD II Trouble Code O2 Sensor Heater Circuit Malfunction Bank 1... Here's code P0141 P0141 OBD II Trouble Code O2 Sensor Heater Circuit Malfunction Bank 1... Here's code P0155. P0155 OBD II Trouble Code 02 Sensor Heater Circuit Malfunction Bank 2... Here's the last code.yay P0161. P0161 OBD II Trouble Code HO2S Heater Circuit Malfunction Bank 2 Sensor 2... The last 3 codes might just be one sensor.

https://play.google.com/store/apps/details?id=com.motordata.obd try out this (it's free), this app have got explanations for P0 ? P2 codes. Besides, I recommend to use it on an ongoing basis.

I hope this helps and is what your looking for... good luck

http://www.fordobdcode.com/p0715-ford

Ford P0715 OBD-II Trouble Code Definition:
P0715 Input Shaft Speed Sensor Circuit Malfunction
P0715 Ford OBD-II Trouble CodeDescription:
OBD Trouble Code P0715 Input/Turbine Speed Sensor "A" Circuit What does the code mean? OBD-ii Code P0715 definition:
The input speed sensor detects the primary pulley revolution speed and sends a signal to the Transmission Control Module (TCM) and Engine Control Module (ECM). Symptoms Sumptoms of OBD code P0715
- Engine Light ON (or Service Engine Soon Warning Light) - Possible shifting problems Causes Causes of the OBD-II code P0715
- Transmission speed sensor circuit is open or shorted. - Poor transmission speed sensor circuit connection - Faulty transmission speed sensor The Error code is generally activated on detection of the following conditions: Diagnostic Trouble Code (DTC) P0715 is detected when TCM or ECM does not receive the proper signal from the sensor. Solutions

Need to get a can of gumout and with it idling spray around the top of the upper plenum to see if you have a vacuum leak if you have a leak it will either idle up slightly or kill the engine very very common on the 3.0 Taurus ,little more information would be helpful like how many miles are on the car

May depend on manufacturer date.All domestic vehicles after 96 are OBD II.Some late production 95 models are OBD II. if your diagnostic connector is rounded oval shape its OBD II. If the diagnostic connector is rectangled it's OBD.

OBD II started with the 1996 model year.