OBD Diagnostic Codes

Trouble code P0147 means: O2 sensor circuit malfunction (bank 1,sensor 3)

Yes, it will be under the dash on the driver side.

Bank 1 sensor 2 oxygen sensor heater malfunction.

P0420 Catalyst System Efficiency Below Threshold (Bank 1)

Left hand radiator primary crash sensor feed / return circuit open

Source code is a sequence of executable instructions written in a particular language.

Pseudo code is a sequence of non-executable instructions. It is also called algorithm written in plain English

No CCD/bus messages received form ECM.

Trouble code P0401 means: Exhaust gas recirculation - insufficient flow detected

insufficient egr flow

P0601, is pcm internal failure. The engine computer has failed an internal self test and will need replaced.

OBD code P0304 is Cylinder Four Misfire.

Trouble code P1401 means: DPF EGR sensor circuit high voltage detected

P1405 Ford - DPFE Sensor Circuit Upstream HoseProbably caused by Faulty DPFE sensor (EGR pressure sensor), or a plugged EGR tube

Trouble code P0441 means: EVAP Purge Flow Monitor Fault

Error code -1 typically indicates a general failure or an unspecified error in various software applications or systems. Its exact meaning can vary depending on the context or program in which it appears. For example, in programming, it may suggest an issue with input validation or a problem in executing a command. To troubleshoot, it's important to consult the specific documentation or support resources for the application or system generating the error.

Error code P0455 indicates a large leak detected in the evaporative emission control system (EVAP) of a vehicle. This code is triggered when the onboard diagnostic system identifies a significant leak, often due to a loose or damaged gas cap, cracked EVAP hoses, or a faulty EVAP canister. Addressing this issue typically involves inspecting the EVAP system for leaks and ensuring all components are properly sealed. Ignoring this code can lead to increased emissions and potential issues with vehicle performance.

Code PO731 refers to an issue with the transmission, specifically indicating that the "Gear Ratio Incorrect" is detected in first gear. To fix this, start by checking the transmission fluid level and quality, as low or dirty fluid can affect shifting. Then, inspect the transmission components, including the input and output sensors, for faults or damage. If necessary, perform a transmission recalibration or consult a professional mechanic for further diagnosis and repairs.

P0302, cylinder number two misfire. Possible causes include spark plugs, fuel injector, and internal engine failure.

Error code SPN 609 on a Kenworth T680 typically indicates a fault related to the engine's coolant temperature sensor. This code suggests that the sensor is either malfunctioning or that there is an issue with the wiring or connection to the sensor. It's important to diagnose the problem accurately, as it can lead to engine performance issues or overheating if not addressed. Checking the sensor and its connections, as well as the engine's cooling system, is recommended.

P0300 Diagnostic Code - Random Misfire

Symptoms.
Engine may stumble or miss
Engine may be hard to start
you may notice no issues

Cause
Failing spark plugs or spark plug wires
Bad coil or coil pack
Failing oxygen sensor(s)
Bad fuel injector or more than one
Stuck exhaust valve
Bad catalytic converter
EGR valve or valve passage clogging
Bad camshaft position sensor
Bad PCM or ECM

The Fix
Best first action is a tune up, new plugs, wires, inspect all hoses and wire connections then reset the code. If it returns you will need to narrow it down to a system, coils and coil packs should be tested, catalytic converters for function ( do you smell rotten eggs?). A misfire that jumps cylinders could indicate a lean condition, do you have any other codes along with the 300? this will help clue you in to the source, check valve function to make sure they are opening and closing fully.
This is probably pone of the most difficult codes to troubleshoot, so start with the basics and work your way into the more expensive options, in many cases a good old tune up solves the problem, back it up with a fuel system cleaning and see where you stand.

Certain codes require two failures in a row to be considered active. Pending means it has only failed once., you can bought china clone Autocom CDP+ or delphi vci diagnostic tools from vipprogrammer.com

P0302 is a cylinder number two misfire. Causes include spark plugs, injector, internal engine failure, etc.

Cylinder # 2 Missfire