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RAM • 2021–2024Luxury

RAM 1500 TRX OBD-II Diagnostic Guide

Comprehensive diagnostic trouble code telemetry, sensor voltage thresholds, and step-by-step repair manuals for RAM 1500 TRX models equipped with 6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2).

DLC OBD-II Port: Driver lower dash assembly next to hood release lever
RAM 1500 TRX (2021–2024)2021–2024Truck
DLC Port:SAE J1962 (16-Pin)
Bus Protocol:500 kbps CAN-FD
Operating Voltage:12.0V – 14.4V Nom.
Engine Powertrain
6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2)
Factory Tolerances
Diagnostic Gateway
16-Pin SAE J1962
Driver Footwell DLC
Sensor Signal Tolerance
5.0V Ref (±0.1V)
OEM Direct Telemetry
Diagnostic Protocol
SAE J1979 / ISO 15765
Mode $01–$0A Verified
Other RAM Vehicle Models:
RAM 1500RAM 2500RAM ProMasterRAM 3500RAM 1500 TRX
NHTSA VERIFIED DEFECT TELEMETRY2014–2025 Model Years

RAM 1500 TRX Problem & Reliability Intelligence by Year

Explore Multi-Year Audit
Model-Specific Telemetry

Top Check Engine Trouble Codes for RAM 1500 TRX

P03001500 TRX Specific
Est. DIY Parts: $100 - $600 (DIY: $30 - $120)

P0300 on RAM 1500 TRX: Diagnosis & Fix

Troubleshooting procedure for P0300: P0300: Random or Multiple Cylinder Misfire Detected specifically affecting RAM 1500 TRX (6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2)).

5-Step DIY GuideFix 1500 TRX
P04201500 TRX Specific
Est. DIY Parts: $400 - $1,800 (DIY: $150 - $400)

P0420 on RAM 1500 TRX: Diagnosis & Fix

Troubleshooting procedure for P0420: P0420: Catalyst System Efficiency Below Threshold (Bank 1) specifically affecting RAM 1500 TRX (6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2)).

5-Step DIY GuideFix 1500 TRX
P01711500 TRX Specific
Est. DIY Parts: $80 - $350 (DIY: $15 - $70)

P0171 on RAM 1500 TRX: Diagnosis & Fix

Troubleshooting procedure for P0171: P0171: System Too Lean (Bank 1) specifically affecting RAM 1500 TRX (6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2)).

5-Step DIY GuideFix 1500 TRX
P02991500 TRX Specific
Est. DIY Parts: $200 - $1,500 (DIY: $50 - $250)

P0299 on RAM 1500 TRX: Diagnosis & Fix

Troubleshooting procedure for P0299: P0299: Turbocharger / Supercharger Underboost Condition specifically affecting RAM 1500 TRX (6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2)).

5-Step DIY GuideFix 1500 TRX
P05201500 TRX Specific
Est. DIY Parts: $130 - $320 (DIY: $25 - $60)

P0520 on RAM 1500 TRX: Diagnosis & Fix

Troubleshooting procedure for P0520: P0520: Engine Oil Pressure Sensor/Switch Circuit Malfunction specifically affecting RAM 1500 TRX (6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2)).

5-Step DIY GuideFix 1500 TRX
Full Diagnostic Library

All OBD-II Codes for RAM 1500 TRX

Showing 1–18 of 122 codes
Active:
1. Filter by Vehicle Manufacturer (25 Makes)
2. DTC System Category
3. Risk Severity Level
P0300Critical Severity
Est. DIY: $100 - $600 (DIY: $30 - $120)

P0300: Random or Multiple Cylinder Misfire Detected

Flashing Check Engine Light (CEL) • Engine shaking, vibrating, or jerking at idle

5 Step DIY GuideTroubleshoot
P0420Medium Severity
Est. DIY: $400 - $1,800 (DIY: $150 - $400)

P0420: Catalyst System Efficiency Below Threshold (Bank 1)

Illuminated Check Engine Light (steady) • Rotten egg / sulfur odor from exhaust

5 Step DIY GuideTroubleshoot
P0171Medium Severity
Est. DIY: $80 - $350 (DIY: $15 - $70)

P0171: System Too Lean (Bank 1)

Check Engine Light on • Rough idling or engine hesitation on acceleration

5 Step DIY GuideTroubleshoot
P0128Low Severity
Est. DIY: $120 - $300 (DIY: $25 - $60)

P0128: Coolant Temperature Below Thermostat Regulating Temperature

Check Engine Light • Cabin heater takes too long to warm up

5 Step DIY GuideTroubleshoot
P0455Low Severity
Est. DIY: $15 - $250 (DIY: $15 - $50)

P0455: Evaporative Emission Control System Leak Detected (Gross Leak)

Check Engine Light on • Gas cap loose warning message on dashboard

5 Step DIY GuideTroubleshoot
P0101Medium Severity
Est. DIY: $45 - $220 (DIY Clean: $12)

Mass Air Flow (MAF) Sensor Circuit Range/Performance

Check Engine Light (CEL) illuminated • Rough or erratic engine idle

4 Step DIY GuideTroubleshoot
P0135Low to Medium Severity
Est. DIY: $80 - $240 (DIY Sensor: $45)

O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)

Check Engine Light on • Slightly increased fuel consumption on short trips

3 Step DIY GuideTroubleshoot
P0172Medium Severity
Est. DIY: $30 - $280 (DIY Clean: $15)

System Too Rich (Bank 1) - Symptoms, Causes & Step-by-Step Fix

Check Engine Light on • Strong unburnt fuel odor from exhaust

3 Step DIY GuideTroubleshoot
P0442Low Severity
Est. DIY: $25 - $200 (DIY: $15)

EVAP System Small Leak Detected - Diagnosis & Repair Guide

Check Engine Light on • Intermittent faint fuel odor near rear wheel well

3 Step DIY GuideTroubleshoot
P0507Medium Severity
Est. DIY: $40 - $250 (DIY Throttle Relearn: $0)

Idle Control System RPM Higher Than Expected - Diagnosis

Engine idles at 1,000+ RPM in park/neutral • RPM surges or hunts at red lights

3 Step DIY GuideTroubleshoot
P0010Moderate Severity
Est. DIY: $120 - $350 (DIY: $40 - $80)

P0010: Camshaft Position Actuator Circuit / Open (Bank 1)

System alert or indicator light illuminated (P0010) • Intermittent performance throttling or unexpected operation halts

5 Step DIY GuideTroubleshoot
P0011High Severity
Est. DIY: $150 - $450 (DIY: $50 - $120)

P0011: Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)

System alert or indicator light illuminated (P0011) • Intermittent performance throttling or unexpected operation halts

5 Step DIY GuideTroubleshoot
P0012High Severity
Est. DIY: $150 - $450 (DIY: $50 - $120)

P0012: Camshaft Position - Timing Over-Retarded (Bank 1)

System alert or indicator light illuminated (P0012) • Intermittent performance throttling or unexpected operation halts

5 Step DIY GuideTroubleshoot
P0013Moderate Severity
Est. DIY: $120 - $320 (DIY: $40 - $75)

P0013: Exhaust Camshaft Position Actuator Circuit / Open (Bank 1)

System alert or indicator light illuminated (P0013) • Intermittent performance throttling or unexpected operation halts

5 Step DIY GuideTroubleshoot
P0014High Severity
Est. DIY: $150 - $420 (DIY: $45 - $90)

P0014: Exhaust Camshaft Position Timing Over-Advanced (Bank 1)

System alert or indicator light illuminated (P0014) • Intermittent performance throttling or unexpected operation halts

5 Step DIY GuideTroubleshoot
P0016Critical Severity
Est. DIY: $300 - $1,200 (DIY: $80 - $250)

P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)

System alert or indicator light illuminated (P0016) • Intermittent performance throttling or unexpected operation halts

5 Step DIY GuideTroubleshoot
P0017Critical Severity
Est. DIY: $300 - $1,200 (DIY: $80 - $250)

P0017: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)

System alert or indicator light illuminated (P0017) • Intermittent performance throttling or unexpected operation halts

5 Step DIY GuideTroubleshoot
P0100Moderate Severity
Est. DIY: $100 - $300 (DIY: $15 - $80)

P0100: Mass or Volume Air Flow Circuit Malfunction

System alert or indicator light illuminated (P0100) • Intermittent performance throttling or unexpected operation halts

5 Step DIY GuideTroubleshoot
Technical FAQ

Frequently Asked Questions

Where is the OBD-II diagnostic port located on the RAM 1500 TRX?

On the RAM 1500 TRX (2021–2024), the standard 16-pin DLC port is located: Driver lower dash assembly next to hood release lever. It supports SAE J1979 / ISO 15765-4 CAN protocols for all handheld OBD-II code readers.

What are the most common Check Engine fault codes on the RAM 1500 TRX?

The most frequently logged trouble codes on the RAM 1500 TRX (6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2)) include P0300, P0420, P0171, P0299.

How does an onboard diagnostic scan communicate with the RAM 1500 TRX?

Connecting an OBD-II scanner to the RAM 1500 TRX's 16-pin DLC port establishes a high-speed CAN link (ISO 15765-4) with the ECM/PCM. It interrogates SAE J1979 Modes $01 through $0A for active DTCs, freeze-frame sensor telemetry, and oxygen sensor readiness monitors.