O2 / Lambda Sensor DTC Codes

Oxygen sensor, lambda sensor, and AFR OBD-II diagnostic trouble codes — with tuning context.

178 codes in this system Depends on root cause

About O2 / Lambda Sensor codes

O2 sensor codes indicate sensor failure or out-of-range readings. Sensors fail naturally at 100-150k km. Replacement is usually the right answer; suppression is for off-road builds running standalone fueling.

All 178 codes in O2 / Lambda Sensor

P0040

Upstream Oxygen Sensors Swapped From Bank To Bank

P0041

Downstream Oxygen Sensors Swapped From Bank To Bank

P013A

O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 2

P013B

O2 Sensor Slow Response - Lean to Rich Bank 1 Sensor 2

P013C

O2 Sensor Slow Response - Rich to Lean Bank 2 Sensor 2

P013D

O2 Sensor Slow Response - Lean to Rich Bank 2 Sensor 2

P013E

O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 2

P013F

O2 Sensor Delayed Response - Lean to Rich Bank 1 Sensor 2

P014A

O2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 2

P014B

O2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 2

P014C

O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 1

P014D

O2 Sensor Slow Response - Lean to Rich Bank 1 Sensor 1

P014E

O2 Sensor Slow Response - Rich to Lean Bank 2 Sensor 1

P014F

O2 Sensor Slow Response - Lean to Rich Bank 2 Sensor 1

P015A

O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1

P015B

O2 Sensor Delayed Response - Lean to Rich Bank 1 Sensor 1

P015C

O2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 1

P015D

O2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 1

P019A

O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 3

P019B

O2 Sensor Delayed Response - Lean to Rich Bank 1 Sensor 3

P019C

O2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 3

P019D

O2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 3

P01F1

O2 Sensor Circuit Bank 1 Sensor 4

P01F2

O2 Sensor Circuit Low Voltage Bank 1 Sensor 4

P01F3

O2 Sensor Circuit High Voltage Bank 1 Sensor 4

P01F4

O2 Sensor Circuit Slow Response Bank 1 Sensor 4

P01F5

O2 Sensor Circuit No Activity Detected Bank 1 Sensor 4

P01F6

O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 4

P01F7

O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 4

P055E

Oxygen Sensor Control Module System Voltage

P064D

Internal Control Module O2 Sensor Processor Performance Bank 1

P064E

Internal Control Module O2 Sensor Processor Performance Bank 2

P2195

O2 Sensor Signal Stuck Lean Bank1 Sensor 1

P2196

O2 Sensor Signal Stuck Rich Bank1 Sensor 1

P2197

O2 Sensor Signal Stuck Lean Bank2 Sensor 1

P2198

O2 Sensor Signal Stuck Rich Bank2 Sensor 1

P2231

O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1

P2232

O2 Sensor Signal Circ Shorted to Heater Circ Bank1 Sensor 2

P2233

O2 Sensor Signal Circ Shorted to Heater Circ Bank1 Sensor 3

P2234

O2 Sensor Signal Circ Shorted to Heater Circ Bank2 Sensor 1

P2235

O2 Sensor Signal Circ Shorted to Heater Circ Bank2 Sensor 2

P2236

O2 Sensor Signal Circ Shorted to Heater Circ Bank2 Sensor 3

P2237

O2 Sensor Positive Current Ctrl Circ/Open Bank1 Sensor 1

P2238

O2 Sensor Positive Current Ctrl Circ Low Bank1 Sensor 1

P2239

O2 Sensor Positive Current Ctrl Circ High Bank1 Sensor 1

P223C

O2 Sensor Pumping Current Range/Performance Bank 1

P223D

O2 Sensor Pumping Current Range/Performance Bank 2

P223E

O2 Sensor Reference Resistance Out Of Range Bank 1

P223F

O2 Sensor Reference Resistance Out Of Range Bank 2

P2240

O2 Sensor Positive Current Ctrl Circ/Open Bank2 Sensor 1

P2241

O2 Sensor Positive Current Ctrl Circ Low Bank2 Sensor 1

P2242

O2 Sensor Positive Current Ctrl Circ High Bank2 Sensor 1

P2243

O2 Sensor Ref Voltage Circ/Open Bank1 Sensor 1

P2244

O2 Sensor Ref Voltage Perf Bank1 Sensor 1

P2245

O2 Sensor Ref Voltage Circ Low Bank1 Sensor 1

P2246

O2 Sensor Ref Voltage Circ High Bank1 Sensor 1

P2247

O2 Sensor Ref Voltage Circ/Open Bank2 Sensor 1

P2248

O2 Sensor Ref Voltage Perf Bank2 Sensor 1

P2249

O2 Sensor Ref Voltage Circ Low Bank2 Sensor 1

P2250

O2 Sensor Ref Voltage Circ High Bank2 Sensor 1

P2251

O2 Sensor Negative Current Ctrl Circ/Open Bank1 Sensor 1

P2252

O2 Sensor Negative Current Ctrl Circ Low Bank1 Sensor 1

P2253

O2 Sensor Negative Current Ctrl Circ High Bank1 Sensor 1

P2254

O2 Sensor Negative Current Ctrl Circ/Open Bank2 Sensor 1

P2255

O2 Sensor Negative Current Ctrl Circ Low Bank2 Sensor 1

P2256

O2 Sensor Negative Current Ctrl Circ High Bank2 Sensor 1

P2270

O2 Sensor Signal Stuck Lean Bank1 Sensor 2

P2271

O2 Sensor Signal Stuck Rich Bank1 Sensor 2

P2272

O2 Sensor Signal Stuck Lean Bank2 Sensor 2

P2273

O2 Sensor Signal Stuck Rich Bank2 Sensor 2

P2274

O2 Sensor Signal Stuck Lean Bank1 Sensor 3

P2275

O2 Sensor Signal Stuck Rich Bank1 Sensor 3

P2276

O2 Sensor Signal Stuck Lean Bank2 Sensor 3

P2277

O2 Sensor Signal Stuck Rich Bank2 Sensor 3

P2278

O2 Sensor Signals Swapped Bank1 Sensor 3 / Bank2 Sensor 3

P2297

O2 Sensor Out of Range During Deceleration Bank1 Sensor 1

P2298

O2 Sensor Out of Range During Deceleration Bank2 Sensor 1

P22AB

O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 2

P22AC

O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 2

P22AD

O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 2

P22AE

O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 2

P22AF

O2 Sensor Reference Voltage Performance Bank 1 Sensor 2

P22B0

O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 2

P22B1

O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 2

P22B2

O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 2

P22B3

O2 Sensor Negative Current Control Circuit Low Bank 1 Sensor 2

P22B4

O2 Sensor Negative Current Control Circuit High Bank 1 Sensor 2

P22B5

O2 Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 2

P22B6

O2 Sensor Pumping Current Trim Circuit Low Bank 1 Sensor 2

P22B7

O2 Sensor Pumping Current Trim Circuit High Bank 1 Sensor 2

P22B8

O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 2

P22B9

O2 Sensor Positive Current Control Circuit Low Bank 2 Sensor 2

P22BA

O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 2

P22BB

O2 Sensor Reference Voltage Circuit/Open Bank 2 Sensor 2

P22BC

O2 Sensor Reference Voltage Performance Bank 2 Sensor 2

P22BD

O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 2

P22BE

O2 Sensor Reference Voltage Circuit High Bank 2 Sensor 2

P22BF

O2 Sensor Negative Current Control Circuit/Open Bank 2 Sensor 2

P22C0

O2 Sensor Negative Current Control Circuit Low Bank 2 Sensor 2

P22C1

O2 Sensor Negative Current Control Circuit High Bank 2 Sensor 2

P22C2

O2 Sensor Pumping Current Trim Circuit/Open Bank 2 Sensor 2

P22C3

O2 Sensor Pumping Current Trim Circuit Low Bank 2 Sensor 2

P22C4

O2 Sensor Pumping Current Trim Circuit High Bank 2 Sensor 2

P232F

O2 Sensor Out of Range During Deceleration Bank 1 Sensor 2

P2379

O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2

P237A

O2 Sensor Exhaust Sample Error Bank 1 Sensor 2

P237B

O2 Sensor Exhaust Sample Error Bank 2 Sensor 2

P239E

O2 Sensor Out of Range During Deceleration Bank 1 Sensor 2

P239F

O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2

P23A0

O2 Sensor Exhaust Sample Error Bank 1 Sensor 2

P23A1

O2 Sensor Exhaust Sample Error Bank 2 Sensor 2

P2414

O2 Sensor Exhaust Sample Error Bank1 Sensor 1

P2415

O2 Sensor Exhaust Sample Error Bank2 Sensor 1

P2416

O2 Sensor Signals Swapped Bank1 Sensor 2 / Bank1 Sensor 3

P2417

O2 Sensor Signals Swapped Bank2 Sensor 2 / Bank2 Sensor 3

P241A

O2 Sensor Signals Swapped Bank 1 Sensor 1/Bank 1 Sensor 2

P241B

O2 Sensor Signals Swapped Bank 2 Sensor 1/Bank 2 Sensor 2

P2626

O2 Sensor Pumping Current Trim Circ/Open Bank1 Sensor 1

P2627

O2 Sensor Pumping Current Trim Circ Low Bank1 Sensor 1

P2628

O2 Sensor Pumping Current Trim Circ High Bank1 Sensor 1

P2629

O2 Sensor Pumping Current Trim Circ/Open Bank2 Sensor 1

P2630

O2 Sensor Pumping Current Trim Circ Low Bank2 Sensor 1

P2631

O2 Sensor Pumping Current Trim Circ High Bank2 Sensor 1

P2A00

O2 Sensor Circ Range/Perf Bank1 Sensor 1

P2A01

O2 Sensor Circ Range/Perf Bank1 Sensor 2

P2A02

O2 Sensor Circ Range/Perf Bank1 Sensor 3

P2A03

O2 Sensor Circ Range/Perf Bank2 Sensor 1

P2A04

O2 Sensor Circ Range/Perf Bank2 Sensor 2

P2A05

O2 Sensor Circ Range/Perf Bank2 Sensor 3

P2A06

O2 Sensor Negative Voltage Bank 1 Sensor 1

P2A07

O2 Sensor Negative Voltage Bank 1 Sensor 2

P2A08

O2 Sensor Negative Voltage Bank 1 Sensor 3

P2A09

O2 Sensor Negative Voltage Bank 2 Sensor 1

P2A10

O2 Sensor Negative Voltage Bank 2 Sensor 2

P2A11

O2 Sensor Negative Voltage Bank 2 Sensor 3

P2A38

O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 3

P2A39

O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 3

P2A3A

O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 3

P2A3B

O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 3

P2A3C

O2 Sensor Negative Current Control Circuit Low Bank 1 Sensor 3

P2A3D

O2 Sensor Negative Current Control Circuit High Bank 1 Sensor 3

P2ABF

Intake Air O2 Sensor Reference Voltage Circuit/Open Bank 1

P2AC0

Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 1

P2AC1

Intake Air O2 Sensor Reference Voltage Circuit Low Bank 1

P2AC2

Intake Air O2 Sensor Reference Voltage Circuit High Bank 1

P2AC3

Intake Air O2 Sensor Reference Voltage Circuit/Open Bank 2

P2AC4

Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 2

P2AC5

Intake Air O2 Sensor Reference Voltage Circuit Low Bank 2

P2AC6

Intake Air O2 Sensor Reference Voltage Circuit High Bank 2

P2AE0

Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 1

P2AE1

Intake Air O2 Sensor Pumping Current Trim Circuit Low Bank 1

P2AE2

Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 1

P2AE3

Intake Air O2 Sensor Pumping Current Circuit Open Bank 1

P2AE4

Intake Air O2 Sensor Pumping Current Circuit Low Bank 1

P2AE5

Intake Air O2 Sensor Pumping Current Circuit High Bank 1

P2AE6

Intake Air O2 Sensor Negative Current Control Circuit Open Bank 1

P2AE7

Intake Air O2 Sensor Negative Current Control Circuit Low Bank 1

P2AE8

Intake Air O2 Sensor Negative Current Control Circuit High Bank 1

P2AE9

Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 2

P2AEA

Intake Air O2 Sensor Pumping Current Trim Circuit Low Bank 2

P2AEB

Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 2

P2AEC

Intake Air O2 Sensor Pumping Current Circuit Open Bank 2

P2AED

Intake Air O2 Sensor Pumping Current Circuit Low Bank 2

P2AEE

Intake Air O2 Sensor Pumping Current Circuit High Bank 2

P2AEF

Intake Air O2 Sensor Negative Current Control Circuit Open Bank 2

P2AF0

Intake Air O2 Sensor Negative Current Control Circuit Low Bank 2

P2AF1

Intake Air O2 Sensor Negative Current Control Circuit High Bank 2

P2B88

Intake Air O2 Sensor Circuit Bank 1

P2B89

Intake Air O2 Sensor Circuit Low Voltage Bank 1

P2B8A

Intake Air O2 Sensor Circuit High Voltage Bank 1

P2B8B

Intake Air O2 Sensor Heater Control Circuit/Open Bank 1

P2B8C

Intake Air O2 Sensor Heater Control Circuit Range/Performance Bank 1

P2B8D

Intake Air O2 Sensor Heater Control Circuit Low Bank 1

P2B8E

Intake Air O2 Sensor Heater Control Circuit High Bank 1

P2C62

O2 Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 3

P2C63

O2 Sensor Pumping Current Trim Circuit Low Bank 1 Sensor 3

P2C64

O2 Sensor Pumping Current Trim Circuit High Bank 1 Sensor 3

P2C65

O2 Sensor Out of Range During Deceleration Bank 1 Sensor 3

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