Skip the auto shop - Our mechanics make house calls

Q: 2009 Nissan Murano has the P0420 trouble code. It says the normal bank 1 issue, but now it says short to VBAT. What is that and how to fix it?

asked by on

Had a normal Po420 code, thought maybe the 02 sensor would fix it. Now i have two P0420 codes one with short to VBAT on the end

My car has an automatic transmission.

Hi there. From the description you have provided, for your vehicle’s P0420 trouble code. I suspect the O2 (Oxygen) sensor you replaced has created an additional concern for your vehicle. Either, the O2 sensor is incorrect by application or is wired wrong. The replacement O2 sensor may be faulty, shorted heater circuit in the sensor. Unfortunately, the O2 sensor more than likely will not repair your vehicle’s P0420 code.

This code is an insufficient catalyst efficiency code. Typically, the cause for this code is a catalytic converter no longer performing. It could be, an exhaust leak before the downstream O2 sensor. I recommend having your vehicle’s P0420 trouble code be diagnosed and repaired by a certified technician, such as one from YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 2009 Nissan Murano has the P0420 trouble code. It says the normal bank 1 issue, but now it says short to VBAT. What is that and how to fix it?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Should I have concerns on a check engine light flashing for 2 seconds just after startup and acceleration?

Hi there. What code/codes are stored in the ECM? Weak ignition coil/coils, oil saturated spark plug wires, worn spark plugs, weak/broken ignition coil electrical connectors (very common on the Toyota/Lexus straight 6 cylinder engines), cracked/split intake hose chamber (also common),...

Q: Car stalls when decelerating and/or going over bumps, especially speed bumps.

The most common cause of this intermittent stalling is due to a few potential problems. The most common faults would be: a wiring fault failing fuel pump an open or short in a sensor Intermittent issues can...

Q: Clock spring compatibility

I do believe that the clock spring will still work considering that the steering wheel is the same and the steering wheel travel is the same. The best way to be certain is to compare the part numbers from the...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.