Powertrain, generic (extended)

P2086 Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 2)

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

P2086 would report an implausible reading from the second exhaust temperature sensor on bank 2. Snap-on's code list confirms the wording. No manufacturer document available to us uses the code: GM, Ford and VW keep all diesel sensors on bank 1, Nissan's per-bank petrol layouts stop at sensor 1, and Ford's 2014 petrol list jumps from P2085 to P2088. Do not confuse it with the third sensor on bank 1: Ford's 6.7 L diesel checks sensors 1 to 4 against each other under P2080, P2084, P242B and P246F, with P24C2 for a multi-sensor mismatch. Bank 2 sensor 2 only makes sense with two separate exhaust trains that each carry a catalyst. CARB still requires a rationality check for every emission-relevant temperature input. The nearest documented analogue is P2084 on bank 1.

Likely causes

Bank 2 downstream sensor aged or sooted, reading off
Sensor loose or not reaching into the gas stream
Leak in the bank 2 exhaust ahead of the sensor

Symptoms

  • Engine warning lamp on
  • Catalyst or filter protection functions limited

Repair estimate

DifficultyMediumDIY possible
Parts and labour€60–350
Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

exhaust gas temperature sensor

Related codes

P2082P2084P2087P2034P2035P2036

References: law.cornell.edu, fordservicecontent.com, performanceparts.ford.com.