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P0172 on Dodge Charger: Fix & DLC Location

Factory diagnostic troubleshooting wire for fault code P0172 (System Too Rich (Bank 1) - Symptoms, Causes & Step-by-Step Fix) specifically on the Dodge Charger (2020–2026, 5.7L / 6.4L 392 HEMI / 6.2L Hellcat (717HP–797HP) / Hurricane 3.0L Turbo).

2020–2026
ChargerSedan
Sensor Voltage Ref
0.1V – 5.0V Ref
Charger SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Drivable (Short Trip)
Medium urgency level
Est. DIY Time
45 – 90 Min
Basic hand tools
Check P0172 On Another Dodge Model:

1. Symptoms of P0172 on Dodge Charger

When the Engine Control Module (ECM/PCM) on your Dodge Charger (5.7L / 6.4L 392 HEMI / 6.2L Hellcat (717HP–797HP) / Hurricane 3.0L Turbo) logs fault code P0172, drivers commonly observe:

Check Engine Light on on Dodge Charger (5.7L / 6.4L 392 HEMI / 6.2L Hellcat (717HP–797HP) / Hurricane 3.0L Turbo)
Strong unburnt fuel odor from exhaust on Dodge Charger (5.7L / 6.4L 392 HEMI / 6.2L Hellcat (717HP–797HP) / Hurricane 3.0L Turbo)
Black carbon soot around exhaust tip on Dodge Charger (5.7L / 6.4L 392 HEMI / 6.2L Hellcat (717HP–797HP) / Hurricane 3.0L Turbo)
Rough idle and engine bogging under throttle on Dodge Charger (5.7L / 6.4L 392 HEMI / 6.2L Hellcat (717HP–797HP) / Hurricane 3.0L Turbo)
Noticeable drop in MPG on Dodge Charger (5.7L / 6.4L 392 HEMI / 6.2L Hellcat (717HP–797HP) / Hurricane 3.0L Turbo)
Dodge Charger OBD-II Port Location
The 16-pin diagnostic connector is located Driver lower dash assembly next to hood lever. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Dodge Charger

Historical warranty claims and technical repair bulletins for Dodge Charger point to the following failure distribution:

55%
Faulty or leaking fuel injector (Dodge OEM Part)
25%
Contaminated Mass Air Flow (MAF) sensor (Dodge OEM Part)
12%
Stuck closed EVAP canister purge valve (Dodge OEM Part)
8%
Excessive fuel pressure regulator failure (Dodge OEM Part)

3. Step-by-Step DIY Repair Guide for Dodge Charger

01
Clean MAF Sensor and Throttle Body

Use dedicated MAF cleaner to remove carbon buildup from sensor wires. on the Dodge Charger equipped with 5.7L / 6.4L 392 HEMI / 6.2L Hellcat (717HP–797HP) / Hurricane 3.0L Turbo.

02
Check Short Term & Long Term Fuel Trims

Use live OBD-II scanner data; negative trims beyond -10% indicate the ECU is cutting fuel. on the Dodge Charger equipped with 5.7L / 6.4L 392 HEMI / 6.2L Hellcat (717HP–797HP) / Hurricane 3.0L Turbo.

03
Inspect Fuel Injector Leak-Down

Perform a fuel pressure leak-down test to identify injectors leaking raw gasoline into cylinders while parked. on the Dodge Charger equipped with 5.7L / 6.4L 392 HEMI / 6.2L Hellcat (717HP–797HP) / Hurricane 3.0L Turbo.

Other Common Fault Codes on Dodge Charger

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Dodge Charger:

4. Dodge Charger P0172 FAQs

What causes code P0172 to trigger on a Dodge Charger?

On the Dodge Charger (5.7L / 6.4L 392 HEMI / 6.2L Hellcat (717HP–797HP) / Hurricane 3.0L Turbo), P0172 is most frequently caused by Faulty or leaking fuel injector or Contaminated Mass Air Flow (MAF) sensor.

Where is the OBD-II port located on my Dodge Charger?

On the Dodge Charger, the 16-pin DLC diagnostic connector is located Driver lower dash assembly next to hood lever. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Dodge Charger with code P0172?

Driveable short distances, but unburnt fuel can damage catalytic converters. Given that P0172 carries a Medium severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.