2007 Mazda6 TS 1.8L with engine codes P2188 and P2178

Question

2007 Mazda6 TS 1.8l I am showing codes P2188 and P2178 and there is increased fuel consumption

Answer 1

Some tests need to be done to accurately diagnose the problem, but here are the probable causes of the problem:

• Intake air leaks 
• Faulty Front Heated Oxygen Sensor (HO2S) 
• Ignition misfiring 
• Faulty fuel injectors Incorrect fuel pressure 
• Faulty Mass Air Flow (MAF) sensor 
• Incorrect Positive Crankcase Ventilation (PCV) hose connection

P2178 Mazda Code - System Too Rich at Off Idle Right Bank
Read more: https://www.autocodes.com/p2178_mazda.html

P2188 Mazda Code - System Too Rich at Idle Bank 1
Read more: https://www.autocodes.com/p2188_mazda.html