P1128 MERCURY - Front O2 Sensor Connectors Swapped
P1128 MERCURY Possible Causes
- Crossed HO2S Harness Connectors
- Powertrain Control Module (PCM) Harness Connector
How is the P1128 MERCURY code repair?Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
What is the cost to diagnose the P1128 MERCURY code
Labor: 1.0The cost to diagnose the P1128 MERCURY code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
How much do you know about cars?
Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge
- Engine Light ON (or Service Engine Soon Warning Light)
P1128 MERCURY MeaningThe Diagnostic Trouble Code (DTC) will set anytime the Powertrain Control Module (PCM) Detects Upstream Oxygen Sensors swapped from Bank to Bank. Heated Exhaust Gas Oxygen (HEGO) Sensor Monitor checks & determines if the HO2S signal response for fuel shift corresponds to the correct engine bank. The code sets when HO2S being tested is not indicated.
More InformationNeed more information on how to fix the P1128 MERCURY code?
Get Access to Factory Service Manuals