FTC Reader Disclosure: When you purchase or register through links on our site, we may earn an affiliate commission at no extra cost to you. Read our Editorial & Advertising Policy.

P0172 on Chrysler Voyager: 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 Chrysler Voyager (2020–2026, 3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic)).

2020–2026
VoyagerVan
Sensor Voltage Ref
0.1V – 5.0V Ref
Voyager 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 Chrysler Model:

1. Symptoms of P0172 on Chrysler Voyager

When the Engine Control Module (ECM/PCM) on your Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic)) logs fault code P0172, drivers commonly observe:

Check Engine Light on on Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic))
Strong unburnt fuel odor from exhaust on Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic))
Black carbon soot around exhaust tip on Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic))
Rough idle and engine bogging under throttle on Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic))
Noticeable drop in MPG on Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic))
Chrysler Voyager OBD-II Port Location
The 16-pin diagnostic connector is located Driver lower kick panel near hood release lever. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Chrysler Voyager

Historical warranty claims and technical repair bulletins for Chrysler Voyager point to the following failure distribution:

55%
Faulty or leaking fuel injector (Chrysler OEM Part)
25%
Contaminated Mass Air Flow (MAF) sensor (Chrysler OEM Part)
12%
Stuck closed EVAP canister purge valve (Chrysler OEM Part)
8%
Excessive fuel pressure regulator failure (Chrysler OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Chrysler Voyager.

3. Step-by-Step DIY Repair Guide for Chrysler Voyager

01
Clean MAF Sensor and Throttle Body

Use dedicated MAF cleaner to remove carbon buildup from sensor wires. on the Chrysler Voyager equipped with 3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic).

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 Chrysler Voyager equipped with 3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic).

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 Chrysler Voyager equipped with 3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic).

Other Common Fault Codes on Chrysler Voyager

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Chrysler Voyager:

4. Chrysler Voyager P0172 FAQs

What causes code P0172 to trigger on a Chrysler Voyager?

On the Chrysler Voyager (3.6L Pentastar V6 24V VVT (287HP / 9-Speed Automatic)), 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 Chrysler Voyager?

On the Chrysler Voyager, the 16-pin DLC diagnostic connector is located Driver lower kick panel near hood release 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 Chrysler Voyager 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.