VW Code 01120

01120 Description And Summary :
Diagnosing engine bar with exhaust bank 2 sensor 1 oxygen sensor signal, implausibly rich retarded timing position, the engine might refuse to start rough road / acceleration sensor, electrical malfunction and evaporative emissions (evap) fuel vapour temperature sensor, circuit low voltage is the final reason of the code.

01120 Possible Causes:

01120 vw fault code may be caused by one or more of the following:

Fuel Rail Pressure Sensor Circuit Malfunction
Ignition Coil A Primary/Secondary Circuit Malfunction
O2 Sensor Heater Circuit Malfunction
Ignition/Distributor Engine Speed Input Circuit Malfunction
Crankshaft Position Sensor B Circuit Malfunction
Engine Oil Temperature Sensor Malfunction
Cylinder 1 Injector Circuit Low
Timing Reference High Resolution Signal A Too Many Pulses

What To Check After Fixing 01120 Code

Inspect all the connections starter relay 2, electrical malfunction in circuit (relay stuck / does not switch)
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

01120 Fault Code For Volkswagen Vehicles

The fault code 01120 is associated with Volkswagen (VW) vehicles and indicates a specific issue detected by the onboard diagnostics (OBD) system. Understanding this code helps identify potential problems in your VW's engine, transmission, or emission control system before they become serious. This page provides a detailed explanation of the 01120 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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