MazicBay Diagnostics
MAZICBAYDiagnostics
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.

P0170 on Chrysler 300

Fuel Trim Malfunction (Bank 1)

Factory diagnostic protocol and troubleshooting wire for fault code P0170 specifically for the Chrysler 300 (2020–2025, 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8)).

Verified OEM Telemetry & Field Repair Tree
Chrysler 3002020–2025
Chrysler 300
Sedan3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
300 SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Drivable (Short Trip)
Medium urgency level
Est. Repair Cost
$100 - $450
Parts & Labor DIY
Check P0170 On Another Chrysler Model:
Diagnose P0170 on Specific 300 Model Year:

1. Symptoms of P0170 on Chrysler 300

When the Engine Control Module (ECM/PCM) on your Chrysler 300 (3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8)) logs fault code P0170, drivers commonly observe:

Check Engine Light on on Chrysler 300 (3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8))
Hesitation during acceleration on Chrysler 300 (3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8))
Rough idle on Chrysler 300 (3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8))
Chrysler 300 OBD-II Port Location
The 16-pin diagnostic connector is located Under driver side dash near left knee panel. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Chrysler 300

Historical warranty claims and technical repair bulletins for Chrysler 300 point to the following failure distribution:

55%
Vacuum leak (Chrysler OEM Part)
25%
Dirty MAF sensor (Chrysler OEM Part)
12%
Weak fuel pump (Chrysler OEM Part)
8%
Faulty fuel pressure regulator (Chrysler OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Chrysler 300.

3. Step-by-Step DIY Repair Guide for Chrysler 300

01
Scan and Record Freeze Frame Telemetry

Connect an OBD-II scan tool and record freeze frame sensor telemetry for code P0170 to note engine RPM, load, and voltage when the fault triggered. on the Chrysler 300 equipped with 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8).

Required Tool: OBD-II Scanner
02
Inspect Related Wiring Harness & Connectors

Inspect the electrical connector and wiring harness related to P0170 for chafing, corrosion, moisture, or pin push-out. on the Chrysler 300 equipped with 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8).

Required Tool: Flashlight, Multimeter
03
Test Component Resistance & Voltage Supply

Measure circuit voltage supply (12V B+ or 5V reference) and sensor/actuator resistance according to factory repair manual specifications. on the Chrysler 300 equipped with 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8).

Required Tool: Digital Multimeter
04
Replace Defective Component

Install a new OEM-grade replacement part, torque fasteners to factory spec, and ensure electrical locking tabs click firmly. on the Chrysler 300 equipped with 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8).

Required Tool: Hand Tool Socket Set, Torque Wrench
05
Clear Trouble Codes & Complete Drive Cycle

Clear all stored DTCs from vehicle memory and perform an OBD-II drive cycle to confirm the diagnostic monitor resets to 'Ready'. on the Chrysler 300 equipped with 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8).

Required Tool: OBD-II Scanner
Recommended Parts & Testing Tools

Equipment for Diagnosing Chrysler 300 (P0170)

Prime Fast Delivery & Verified Fitment
Air-Fuel Sensor Cleaner

CRC Mass Air Flow (MAF) Sensor Cleaner Spray

4.7 / 5.0 (30,000+ Reviews)

Safely dissolves debris on delicate MAF hot-wires to restore accurate air-fuel ratio calculations.

Sensor Signal Voltage Meter

AstroAI Auto-Ranging Digital Multimeter

4.6 / 5.0 (Best Seller)

Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.

$29.99 Prime
View on Amazon
Top Mobile OBD-II Scanner

BlueDriver Bluetooth Pro OBDII Scan Tool

4.7 / 5.0 (50,000+ Reviews)

Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.

Compare OEM & Aftermarket Replacement Sensors for Chrysler 300Verified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
Find Parts on Amazon
* As an Amazon Associate, MazicBay earns from qualifying purchases. Prices & availability subject to change.

Other Common Fault Codes on Chrysler 300

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Chrysler 300:

4. Chrysler 300 P0170 FAQs

What causes code P0170 to trigger on a Chrysler 300?

On the Chrysler 300 (3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8)), P0170 is most frequently caused by Vacuum leak or Dirty MAF sensor.

Where is the OBD-II port located on my Chrysler 300?

On the Chrysler 300, the 16-pin DLC diagnostic connector is located Under driver side dash near left knee panel. 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 300 with code P0170?

Caution. Fuel delivery compensation limit reached. Given that P0170 carries a Medium severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.