What causes the P0420 trouble code on a Subaru Legacy?

There are many things that can cause the P0420 trouble code in your Legacy. Here are the most common ones. Oxygen Sensor – The P0420 codes is thrown when the oxygen sensors on both sides of the exhaust have very similar readings. When the oxygen sensor is bad, it can cause a false reading and trigger the code.

What is the trouble code on a Subaru Legacy?

P0420 is a very common trouble code. This code number references a number that is given to you when you plug your Subaru Legacy into a OBDII scanner. Subaru Legacy P0420 OBDII Code Defined. P0420 is a OBDII trouble code.

What is the code on the Subaru check engine light?

Subaru Check Engine Light and Code # P0420 Explained. If the check engine light comes on in your Subaru there is always a corresponding code set in the computers memory.

Why does my Subaru Legacy have no air?

The first was a 96 Legacy wagon AWD 2.2 that was low on coolant due to a crack in the radiator and the ECT value was causing issue with starting because it controls the IAC position. It reported high temperature to the ECM which closed the IAC. No air – No start. The second is the following. I am uploading video now.

How much does it cost to diagnose a Subaru code?

The cost to diagnose the P0420 SUBARU code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour. How much do you know about cars? When is the code detected?

Subaru Check Engine Light and Code # P0420 Explained. If the check engine light comes on in your Subaru there is always a corresponding code set in the computers memory.

What does the p0974 OBD-II trouble code mean?

The P0974 code is generic powertrain code related to the transmission, including pressure faults and sensor failures. In this case, the engine control module (ECM) has detected a fault with a high voltage reading from the shift solenoid A control circuit. What the P0974 code means

What should I do if I have a P2017 trouble code?

The leading and most likely fix for this trouble code is to clean the throttle body and intake manifold. Need help with a P2017 code? YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

What are the codes for Subaru check engine light codes?

P1086Tumble Generator Valve #2 (LH) Position Sensor Circuit Low Input P1087Tumble Generator Valve #2 (LH) Position Sensor Circuit High Input P1088Tumble Generator Valve #1 (RH) Position Sensor Circuit Low Input P1089Tumble Generator Valve #1 (RH) Position Sensor Circuit High Input P1090Tumble Generator Valve #1 (RH) Malfunction (Stuck Open)

Where is purge valve solenoid located on Subaru Impreza?

The fix was to replace Purge Valve control solenoid, P/N: 16102AA080 (16102AA490 for ’05-’07) – located under the intake manifold on the passenger side of the engine. This part is the same as on a ’97 Legacy that I recently had, so it’s a common part that Subaru has used for years.

Why is my p0171 system Lean code not working?

Change the plugs and oil about a month and a half ago and got a maf sensor error and get a P0171 system lean code after resetting the ECU. I’ve been troubleshooting since then but can’t seem to get the P0171 ironed out. The cel only pops at idle and the car runs great through the power band. Here’s what I’ve already done.

What does the P0420 code on Honda Accord mean?

Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. As the code description implies the P0420 code means that the vehicle’s control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting).

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