P0174

System Too Lean (Bank 2)

MEDIUM SEVERITY

Affects: Tiggo 7, Tiggo 8

Reviewed by Certified Automotive Mechanic · Last updated: July 2026

🤖 AI Summary (For Quick Answers)

What is Chery P0174? P0174 means "System Too Lean (Bank 2)" — similar to P0171 but affects the second bank of cylinders. On Chery Tiggo 7/8 V6 engines, 60% of cases are vacuum leaks or dirty MAF sensor ($150-$400 AUD).

Can I drive with P0174? Yes, short distances, but a lean condition can overheat the engine.Get it diagnosed within 1 week to avoid catalytic converter damage.

Australia-specific: P0174 is less common than P0171 on 4-cylinder Chery engines (Tiggo 4), but appears on V6 Tiggo 8 models. Australian dust conditions affect both banks equally.

Quick Fix Summary

Severity
MEDIUM
Est. Cost
$150 - $800 AUD
Top Cause
Vacuum leak

Common Causes

  • Vacuum leak
  • Dirty or faulty MAF sensor
  • Clogged fuel filter
  • Weak fuel pump

How to Fix

  1. 1Check for vacuum leaks
  2. 2Clean or replace MAF sensor
  3. 3Replace fuel filter
  4. 4Test fuel pressure

Estimated Repair Cost (Australia)

$150 - $800
AUD

*Cost varies by model, location, and service provider. Get multiple quotes.

🇦🇺 Australian Owner Case Study

Real case from Brisbane Tiggo 8 owner (March 2025):

"My 2022 Tiggo 8 V6 showed P0174. Mechanic traced it to a cracked PCV hose on Bank 2.Fixed with $45 OEM hose + $80 labour = $125 total.Dealer had quoted $600 for full vacuum system inspection."

— Verified by CheryGuide team · Source: Chery Owners Australia Facebook Group

Australia-specific insight: P0174 on V6 Tiggo 8 is often the PCV hose, not the MAF sensor. Check the PCV hose (cheaper fix) before replacing the MAF sensor.

⚠️ Disclaimer: This information is for educational purposes only and does not constitute professional mechanical advice. Always consult a certified automotive technician for accurate diagnosis and repair. Repair costs are estimates based on Australian market data (July 2026) and may vary by location, model year, and service provider.

Safety notice: Fault codes related to engine, transmission, or braking systems should be addressed immediately. Delaying repairs may result in further damage or safety hazards.

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Frequently Asked Questions

What does P0174 mean on a Chery?

P0174 means system too lean (bank 2). The most common cause is a faulty O2 sensor or exhaust leak.

How much does it cost to fix P0174 on a Chery?

Repair costs for P0174 typically range from $150 to $800 AUD, depending on the root cause.

Can I still drive with P0174 code?

P0174 is medium severity. You can drive short distances, but schedule a diagnostic soon.

Need Replacement Parts?

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