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Volvo OBD-II Diagnostics & Fault Codes

Factory diagnostic trouble code directory for Volvo vehicles (XC90, XC60, XC40, S60, EX90). Access model-specific sensor tolerances, live freeze-frame telemetry, and verified DIY repair procedures.

Reliability Index
High
Industry Standard
Dealership Labor Rate
$165/hr
National Average
Avg. Sensor Cost
$170 - $310
OEM Direct Replacement
Protocol Standards
ISO 15765-4 CAN
SAE J1979 Compliant
Model Selection

Select Your Volvo Model (1 Supported)

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Most Common Volvo Check Engine Trouble Codes

P0420Volvo Specific
Est. DIY Parts: $400 - $1,800 (DIY: $150 - $400)

P0420 on Volvo: Symptoms & Fix

Factory troubleshooting procedure for P0420: P0420: Catalyst System Efficiency Below Threshold (Bank 1) specifically affecting Volvo (XC90, XC60).

5-Step OEM FixDiagnose Volvo
P0300Volvo Specific
Est. DIY Parts: $100 - $600 (DIY: $30 - $120)

P0300 on Volvo: Symptoms & Fix

Factory troubleshooting procedure for P0300: P0300: Random or Multiple Cylinder Misfire Detected specifically affecting Volvo (XC90, XC60).

5-Step OEM FixDiagnose Volvo
P0171Volvo Specific
Est. DIY Parts: $80 - $350 (DIY: $15 - $70)

P0171 on Volvo: Symptoms & Fix

Factory troubleshooting procedure for P0171: P0171: System Too Lean (Bank 1) specifically affecting Volvo (XC90, XC60).

5-Step OEM FixDiagnose Volvo
P0128Volvo Specific
Est. DIY Parts: $120 - $300 (DIY: $25 - $60)

P0128 on Volvo: Symptoms & Fix

Factory troubleshooting procedure for P0128: P0128: Coolant Temperature Below Thermostat Regulating Temperature specifically affecting Volvo (XC90, XC60).

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P0442Volvo Specific
Est. DIY Parts: $25 - $200 (DIY: $15)

P0442 on Volvo: Symptoms & Fix

Factory troubleshooting procedure for P0442: EVAP System Small Leak Detected - Diagnosis & Repair Guide specifically affecting Volvo (XC90, XC60).

5-Step OEM FixDiagnose Volvo
P0500Volvo Specific
Est. DIY Parts: $140 - $340 (DIY: $30 - $75)

P0500 on Volvo: Symptoms & Fix

Factory troubleshooting procedure for P0500: P0500: Vehicle Speed Sensor (VSS) Malfunction specifically affecting Volvo (XC90, XC60).

5-Step OEM FixDiagnose Volvo
Full Diagnostic Library

All OBD-II Codes for Volvo

Showing 118 of 122 codes
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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

What are the most common Check Engine fault codes on Volvo vehicles?

On Volvo vehicles, the most frequently logged diagnostic trouble codes are P0420 (Catalytic Converter Efficiency), P0300 (Random Misfire), P0171 (System Lean), and P0128 (Coolant Thermostat).

How much does a dealer diagnostic scan cost for a Volvo?

Standard diagnostic fees at authorized Volvo dealerships range from $120 to $180, aligned with their $165/hr standard hourly labor rate. Independent auto parts stores can read codes for free.

Can I clear a Volvo Check Engine light with an OBD-II scanner?

Yes, any standard OBD-II / EOBD scanner connected to the 16-pin DLC port can clear logged DTC codes and turn off the Check Engine light once the underlying mechanical defect has been resolved.