20 RAM diagnostic codes on file. Each shows the symptom for free — unlock the full diagnosis, repair steps, and field insights with a free account.
| Code | System | Symptom | Fix |
|---|---|---|---|
| C0031 | Chassis (ABS) | ABS / Service 4WD / Traction Off. | Unlock |
| C0034 | Chassis (ABS) | ABS / Service 4WD / Traction Off. | Unlock |
| C0037 | Chassis (ABS) | ABS / Service 4WD Lights. | Unlock |
| C003A | Chassis (ABS) | ABS / Service 4WD / Traction Off. | Unlock |
| C006C | Chassis (ESC) | Stability Control Disabled. | Unlock |
| Manual Reset | HVAC | Split temps (Hot/Cold); Air stuck on defrost or floor; No response to temp changes. | Unlock |
| P0087 | — | Engine bogs under load; "Fuel Filter Low Pressure" warning; Stalling. | Unlock |
| P0191 | — | Erratic idle; Engine "clatter"; Sudden stalling. | Unlock |
| P020F | Cummins 6.7L | Engine "stumble" or miss; Knocking sound under load; Increased exhaust smoke; CEL on. | Unlock |
| P0401 | — | Rough idle; EGR "Service" message; High intake temps. | Unlock |
| P0471 | — | Exhaust brake feels weak; Poor fuel economy; Turbo lag. | Unlock |
| P0507 | — | Engine idles higher than normal (900+ RPM); Hissing sound from engine bay. | Unlock |
| P208D | — | DEF gauge reads empty when full; Service DEF system message; 5 MPH derate. | Unlock |
| P20EE | — | "SCR Efficiency Below Threshold"; Check engine light; Potential DEF derate timer. | Unlock |
| P2262 | — | Low power; No turbo boost; "Service Electronic Braking System" message (sometimes). | Unlock |
| P226C | — | Slow boost response; Excessive black smoke on acceleration. | Unlock |
| P229E | Aftertreatment (NOx) | MIL (Check Engine Light) & Potential Derate. | Unlock |
| P229F | Cummins 6.7L | Check Engine Light; DEF/SCR warning on dash; Potential "Speed Limited" countdown (Limp Mode). | Unlock |
| P2563 | — | Exhaust brake stays on or won't engage; Poor throttle response. | Unlock |
| Service Light Indicator | — | — | Unlock |
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