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2011 Ram 2500 5.7 Hemi 4x4 Diagnosing P0300, P050B, P0113, and P0108 Fault Codes

Model: 2011 Ram Fault Code: P0113 Posted: 2015-07-22 20:35

I own a 2011 Ram 2500 5.7L Hemi 4x4 truck and am currently struggling to diagnose the following diagnostic trouble codes: P0300 (random misfire), P050B (fuel pump control circuit malfunction), P0113 (intake air temperature sensor too high), and P0108 (manifold absolute pressure sensor range/performance issue). I've tried several troubleshooting steps but haven't resolved the underlying causes. Any accurate, step-by-step guidance or known solutions for these codes in this specific model would be greatly appreciated.

Related fault codes
P0113P0300
Comments (5)
Anonymous 2015-07-22 20:52

This forum provides excellent explanations of common trouble code causes and fixes. I recommend starting with P0108, as it is often a root cause for both P0300 and P050B.

Anonymous 2015-07-26 13:02

I successfully resolved the P0108 code by replacing the MAP sensor. However, the P0300 misfire issue persists. Any additional troubleshooting tips or diagnostics?

Anonymous 2015-07-30 08:00

To isolate the misfire source, consider using a freeze frame data analysis for P0300 to identify specific engine conditions during the fault occurrence.

Anonymous 2015-08-01 04:17

I confirmed the issue—my IAT sensor was showing incorrect readings, displaying cold temperature in a dry heat reserve at 95°F with no actual date or timestamp. The MAP sensor data also appeared faulty. Additional fuel pressure information would be helpful for further diagnosis.

Anonymous 2015-08-02 16:54

While the exact fuel pressure specification isn't widely documented, it's generally around 50 psi while the engine is running. Did replacing the IAT sensor resolve your P0300 issue? If not, consider checking for vacuum leaks or ignition system faults.