P2200 Fault in the circuit of the bank 1 NOx sensor, the sensor that measures nitrogen oxides in the exhaust

NOx sensor circuit malfunction, bank 1

Severity not verified — if the car runs badly, have it inspected

The sources agree on the meaning but none gives a consistent driving instruction; Kelley Blue Book lists lack of power, stalling and no-start as possible effects, so how urgent it is depends on the vehicle.

It gets more serious if:

  • Inspect soon: Inspect soon if the truck loses power, stalls or will not start, as Kelley Blue Book lists for this code.

Source: how we rate severity

P2200 in short

P2200 means the engine computer sees a fault in the circuit of the bank 1 NOx sensor. The two references list wiring problems and a failed NOx sensor as the causes. Ford has bulletins that list P2200 with other emissions codes on 2011-2012 Super Duty diesels. Have the sensor and its wiring tested before replacing parts.

A NOx sensor sits in the exhaust and reports the level of nitrogen oxides, which the computer uses to check how well the emissions system is working. P2200 sets when the computer sees a fault in that sensor's circuit on bank 1.

TroubleCodes.net lists only two causes: wiring problems and a faulty sensor. Kelley Blue Book calls sensor failure the most common cause and lists lack of power, stalling and a no-start among effects.

Ford bulletins 15-0042 and 13-6-24 list P2200 with P207F, P20EE, P2201, P2209 and other codes on 2011-2012 F-Super Duty trucks with the 6.7L diesel. Their summaries do not name the repair, so this is context rather than a confirmed cause.

Most likely causes

These are general causes for this code across vehicles. None is specific to one make or model.

  1. Failed NOx sensor

    Common general cause
    Why it ranks here
    TroubleCodes.net lists a NOx sensor malfunction and Kelley Blue Book calls sensor failure the most common cause.
    What would change this
    Rises if the wiring and connector test fine and the sensor still reports a fault. Falls if the circuit shows damage.

  2. Damaged wiring or connector at the NOx sensor

    Common general cause
    Why it ranks here
    TroubleCodes.net lists wiring issues, and Kelley Blue Book lists sensor or circuitry damage. The sensor sits in the hot exhaust, where harness and connectors are exposed.
    What would change this
    Rises if the harness is chafed, burned or corroded, or the fault comes and goes when the harness is moved. Falls if the circuit tests clean.

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Read all stored codes and freeze-frame data. Note other emissions codes such as P207F or P20EE that Ford lists together with P2200.

    Low riskTool: OBD-II scan tool

    • IfOnly P2200 or other NOx sensor circuit codes are stored

      It meansTest the sensor circuit.

      Go to step 2

    • IfReductant or SCR codes are also stored

      It meansHave a shop check the whole emissions system; the codes may be linked.

  2. Inspect the NOx sensor connector and harness for chafing, heat damage, corrosion and loose pins, then check the sensor circuit with a multimeter against the service data.

    Use cautionTool: multimeter, wiring diagram

    Warning:Exhaust parts stay hot long after the engine stops and the NOx sensor sits in the exhaust. Let the truck cool for at least an hour and support it on stands, never only a jack.

Symptoms

  • Check engine light
  • Lack of power Gets more serious: stop and have it checked.
  • Stalling or rough idle Gets more serious: stop and have it checked.
  • No-start (listed by Kelley Blue Book) Gets more serious: stop and have it checked.

How to fix

  1. With the engine off and the exhaust cold, look at the NOx sensor connector and the harness leading to it for rubbing, heat damage or a loose plug.

    Warning:The exhaust stays hot long after the engine stops. Wait at least an hour before touching anything near it.

Parts and cost context

  • NOx sensor:NOx sensors are specific to the engine and exhaust position; confirm the bank and part number, and test the circuit before replacing the sensor.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Ford

  • 2011–2012 · F-250 Super Duty

    Supported by vehicle data

    Ford bulletins 15-0042 and 13-6-24 list P2200 with other emissions codes on 2011-2012 Super Duty diesels. A 2011 F-350 owner reports five emissions visits with P207F, P20EE and P2200. The bulletin summaries give no repair, and whether they are current is not verified.

  • 15-0042Status unverified

    6.7L Super Duty built before 10/11/2011: MIL with P207F, P20EE, P2200, P2201, P2209, P164A, P2A00 or P0133

    2011–2012f-250-super-duty, f-350-super-duty, f-450-super-duty, f-550-super-duty · issued · NHTSA 10057858

    Ford gives information on 2011-2012 F-Super Duty trucks with the 6.7L diesel built before 10/11/2011 that can show a MIL with this set of codes. The summary does not give the repair.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • TSB-13-6-24Status unverified

    2011-2012 F-Super Duty: MIL with P207F, P2033, P2200, P2201, P2209, P164A, P2100 and/or P0133

    2011–2012f-250-super-duty, f-350-super-duty, f-450-super-duty, f-550-super-duty · issued · NHTSA 10053478

    Ford lists a lit MIL with this code set on some 2011-2012 F-Super Duty truck engines. The summary does not give the repair. Updated 1/15/14.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • P207FDiesel exhaust fluid quality or dosing performance is below what the computer expects

    Same system Supported by vehicle data

    Ford bulletins 15-0042 and 13-6-24 list P2200 and P207F together on 2011-2012 Super Duty diesels.

  • P20EEDiesel NOx catalyst not removing enough NOx

    Same system Supported by vehicle data

    Ford bulletin 15-0042 lists P20EE with P2200 on 2011-2012 Super Duty 6.7L trucks.

All Diesel emissions and glow plugs codes

P2200 questions

Is P2200 always the NOx sensor?

Not always. The code points at the sensor circuit, and TroubleCodes.net lists wiring as well as the sensor itself, so check the wiring and connector before replacing the sensor.

Sources and review

  1. TroubleCodes.net P2200 NOx sensor, bank 1 circuit malfunction — TroubleCodes.net
  2. Kelley Blue Book OBD-II code P2200 — Kelley Blue Book
  3. Ford 15-0042: 2011-2012 Super Duty 6.7L built before 10/11/2011, MIL with P207F, P20EE, P2200, P2201, P2209, P164A, P2A00 or P0133 — Ford via NHTSA
  4. Ford TSB 13-6-24: 2011-2012 F-Super Duty, MIL with P207F, P2033, P2200, P2201, P2209, P164A, P2100 and/or P0133 — Ford via NHTSA
  5. NHTSA complaints ODI 10514078 (2011 Ford F-350) and 11505090 (2019 Subaru Forester) — NHTSA ODI
Last reviewed
Written by
Saurabh K.
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