Question about 2004 Mazda RX-8

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Fault code P2096. Which Oxygen sensor is it front or rear? Where can I get one? Mazda quoted £350 plus labour. It's a 2004 RX8 231 registered in the UK.

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There are 2 O2 sensors...front is a current based WB...and the rear a more normal narrow band sensor. The rear could probably be retrofitted with a 4wire Bosch sensor...but the Mazda one isn't that out of line in price compared to generic if you figure in the wiring and pissing around

The wideband one in the front is not likely to be available yet you are likely stuck with an OEM replacement for it....

The PCM will likely throw very specific codes for an O2 sensor failure and there are Monitoring routines that monitor the efficiency of if the code isn't is likely OK. O2 sensors and CAT's are very tightly controlled by emissions regulations...and the OBDII **** does a good job of monitoring that kind of stuff

If you don't know if it's the problem...maybe borrow one from a buddies car if it the front one

Posted on Jul 03, 2009


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I am getting the following codes on my 2002 Nissan Altima v6 3.5 liter P1430, P1420, P1805, P1152, P1102, P1011, P1021 & P1335 I'm going crazy here. Please help!

Definition of Diagnostic Trouble Code P1430 Ford: Electric Air Pump Secondary Lincoln: Electric Air Pump Secondary Mazda: Electric Air Pump Secondary Mercury: Electric Air Pump Secondary Toyota: Intake Constrictor CTRL Circuit Open or Short

Definition of Diagnostic Trouble Code P1420 Audi: Second Air Injection Valve Circ Electrical Malfunction BMW: Secondary Air Valve Control Circuit Electrical Buick: Intake Air Low Pressure Switch Circuit Low Voltage Cadillac: Intake Air Low Pressure Switch Circuit Low Voltage Chevrolet: Intake Air Low Pressure Switch Circuit Low Voltage Chrysler: Register Resonant Charging 1 (RRC1) Dodge: Register Resonant Charging 1 (RRC1) Ford: Catalyst Temperature Sensor GMC: Intake Air Low Pressure Switch Circuit Low Voltage Honda: Nox Adsorptive Catalyst System Efficiency Below Threshold Catalytic converter Jeep: Register Resonant Charging 1 (RRC1) Lincoln: Catalyst Temperature Sensor Mazda: Catalyst system efficiency below threshold (bank 1) Mercedes: AIR Pump Switch over Valve Mercury: Catalyst Temperature Sensor Oldsmobile: Intake Air Low Pressure Switch Circuit Low Voltage Pontiac: Intake Air Low Pressure Switch Circuit Low Voltage Saturn: Intake Air Low Pressure Switch Circuit Low Voltage Subaru: EVAP Purge Control Solenoid Circuit High Input Toyota: SCV Control Circuit Malfunction Volkswagen: Second Air Injection Valve Circ Electrical Malfunction

Definition of Diagnostic Trouble Code P1805 Ford: Four wheel drive high indicator circuit failure Lincoln: Four wheel drive high indicator circuit failure Mazda: (4WD) High Indicator Open Circuit Mercury: Four wheel drive high indicator circuit failure Toyota: SB Solenoid Circuit Malfunction

Definition of Diagnostic Trouble Code P1152 Audi: Bank1, Long Term Fuel Trim, Range 2 Leanness Lower Limit Exceeded BMW: Oxygen Sensor Heater Circuit Low Voltage (Bank 2 Sensor 1) Ford: Lack Of Heated Oxygen Sensor Bank 2 Sensor 1 Switches - Sensor Indicates Rich Jaguar: Lack of H02S-21 switch, sensor indicates rich Land Rover: Oxygen sensor response time bank 2.Short circuit to ground Lincoln: Lack Of Heated Oxygen Sensor Bank 2 Sensor 1 Switches - Sensor Indicates Rich Mazda: Lack Of Heated Oxygen Sensor Bank 2 Sensor 1 Switches - Sensor Indicates Rich Mercury: Lack Of Heated Oxygen Sensor Bank 2 Sensor 1 Switches - Sensor Indicates Rich Subaru: Oxygen sensor range /performance problem (Low) Volkswagen: Bank1, Long Term Fuel Trim, Range 2 Leanness Lower Limit Exceeded Volvo: Oxygen Sensor Front, Bank 2

Definition of Diagnostic Trouble Code P1102 Acura: Mass Airflow (MAF) Sensor Lower Than Expected Comprehensive Audi: Oxygen Sensor Heating Circuit,Bank1-Sensor1 Short to B+ Chrysler: HEV Stop Request Performance Dodge: HEV Stop Request Performance Hyundai: MAP Sensor Circuit Low Input Jeep: HEV Stop Request Performance Kia: Heated Oxygen Sensor Bank 1 Sensor 1 Heater Circuit High Input Land Rover: Throttle to air flow plausibility not active.Last occurrence - minimum signal Mazda: Mass Air Flow Sensor In Range But Lower Than Expected Mitsubishi: Traction Control Ventilation Solenoid Circuit Porsche: Heated Oxygen Sensor 1 Ahead Of TWC Heater Short To B+ Saab: Front Heated Oxygen Sensor Bank 1, Control Module Input, Current in Pre-Heating Circuit Too High Subaru: Pressure Sources Switching Solenoid Valve Circuit Malfunction Volkswagen: Oxygen Sensor Heating Circuit,Bank1-Sensor1 Short to B+ Volvo: Power Stage Group B

Definition of Diagnostic Trouble Code P1011 Saab: Injector Cylinder 1 Shorting To Ground Toyota: OCV for VVTL Open Malfunction (Bank 1)

Definition of Diagnostic Trouble Code P1021 Honda: Valve Pause System Stuck On Comprehensive Mitsubishi: OCV OPN. Bank 1 Saab: Injector Cylinder 2 Shorting To Ground Toyota: OCV for VVTL Open Malfunction (Bank 2)

Definition of Diagnostic Trouble Code P1335 Audi: Engine Torque Monitoring 2 Control Limit Exceeded Buick: CKP Circuit Cadillac: CKP Circuit Chevrolet: CKP Circuit Ford: (EGR) Position Sensor Minimum Stop Performance GMC: CKP Circuit Infiniti: CKP Sensor (Ref) Jaguar: CKPS Circuit Malfunction Land Rover: Exhaust gas recirculation position sensor minimum stop performance. Lexus: Igniter Circuit Malfunction Bank 2 (During Engine Running) Lincoln: (EGR) Position Sensor Minimum Stop Performance Mazda: (EGR) Position Sensor Minimum Stop Performance Mercedes: CKP Sensor Circuit Malfunction, Bank 2 Mercury: (EGR) Position Sensor Minimum Stop Performance Oldsmobile: CKP Circuit Pontiac: CKP Circuit Saturn: CKP Circuit Toyota: No CKP Sensor Signal Engine Running Volkswagen: Engine Torque Monitoring 2 Control Limit Exceeded

Jun 29, 2015 | Nissan Cars & Trucks


Harley Davidson Fault Codes

1- Turn Ignition switch to OFF & Run/Stop switch is to Run.
2- Push odometer reset button in & hold.
3- Turn ignition switch to Ignition and release odometer reset button. Background lighting sould illuminate, speedometer needle should sweep its full range and indicator lamps (battery, security, low fuel, check engine and cruise) should illuminate. The word "diag" should then appear.
4 - Push the odometer reset button once and you will see the selection menu "PSSPt" with the first P flashing.
5 - Each letter represents an area of the diagnostics module. The module that is flashing is the one you are going to check. To move from one letter (module) to the next, you push the odometer reset button one time. (from P to S to SP to t and back to P, etc.)
P = ECM/ICM (Electronic Control Module [EFI] / Ignition Control Module [Carbureted])
S = TSM/TSSM (Turn Signal/ Turn Signal Security Module)
SP = speedometer
T = tachometer
6 - To get the DTC within an area of diagnostics, push and hold the odometer reset button in for 5 seconds and release. If there are any DTC's the code will be displayed or the word "none" will appear if there are no DTC's. Push the odometer reset button again to view additional codes if they exist.
7 - Record the codes.
8 - If DTC's are not to be cleared, Press and release the odometer reset button. Part number of module will be displayed.
NOTE: To determine if a code is current or historic, clear the displayed code by pushing in and holding the odometer reset button ( longer than 5 seconds) until 'clear' comes up. Release the odometer reset button. Turn OFF the ignition switch. Run your bike and shut it down then recheck the DTC's again by repeating steps 1 to 9. If the code is current it will reappear.
9 - Press and release the odometer reset button to continue to the next module.
10 - Turn Ignition switch to OFF.
On models not equipped with a tachometer "No Rsp" will appear when the tachometer identifier is selected.
"No Rsp" will also appear if the run/off switch is in the off position when doing this procedure.
HFSM = Hands Free Security Module
TSM = Turn signal module
Priority/DTC/Fault condition
1. P0605 ECM FLASH Memory Error
2. P0603 ECM EEPROM Memory Error
3. U1300 ECM Serial Data Low
4. U1301 ECM Serial Data High
5. U1097 Loss of Speedometer Serial Data to ECM
6. U1064 Loss of TSM/FSFM Serial Data to ECM
7. P1003 System relay contacts open
8. P1002 System Relay Coil High/Shorted
9. P1001 System Relay Coil Open/Low
10. P1004 System Relay Contacts Closed
11. P1009 Incorrect Password
12. P1010 Missing Password
13. P06415 V+Vref 1 Out Of Range
14. P06515 V+Vref 2 Out Of Range
15. P0373 CKP Sensor Intermittent
16. P0107 Map Sensor Open/Low
17. P0108 Map Sensor High
18. P0374 CKP Sensor Synch Error
19. P1600 EFI Module Processor Internal Error
20. P1270 TGS Validation Error
21. P2107 EFI Module Processor Internal Fault
22. P2122 TGS1 Low/Open
23. P2123 TGS1 High
24. P2127 TGS2 Low/Open
25. P2128 TGS2 High
26. P2138 TGS Correlation Error (Twist grip sensor)
27. P0120 TPS1 Range Error
28. P0220 TPS2 Range Error
29. P0122 TPS1 Low
30. P0123 TPS2 High/Open
31. P0222 TPS2 Low
32. P0223 TPS2 High/Open
33. P2135 TPS Correlation Error
34. P2119 EFI Motor Throttle Body Range Performance
35. P2100 EFI Motor Circuit Open
36. P2101 EFI Motor Circuit Range Performance (Actuation Error)
37. P2102 EFI Motor Circuit Low
38. P2103 EFI Motor Circuit High
39. P2176 EFI Closed Position Not Learned
40. P1514 Air Flow Fault
41. P2105 EFI Forced engine shutdown
42. P1501 Jiffy Stand Sensor Low
43. P1502 Jiffy Stand Sensor High
44. P0572 Brake Switch Low
45. P0117 ET Sensor Low
46. P0118 ET Sensor High
47. P0112I AT Voltage Low
48. P0113I AT Voltage Open/High
49. P1351 Front Ignition Coil Driver Open/Low
50. P1354 Rear Ignition Coil Driver Open/Low
51. P1352 Front Ignition Coil Driver High/Shorted
52. P1355 Rear Ignition Coil Driver High/Shorted
53. P1357 Front Cylinder Combustion Intermittent
54. P1358 Rear Cylinder Combustion Intermittent
55. P0261 Front Injector Open/Low
56. P0263 Rear Injector Open/Low
57. P0262 Front Injector High
58. P0264 Rear Injector High
59. P0562 Battery Voltage Low
60. P0563 Battery Voltage High
61. P0501 VSS Sensor Low
62. P0502 VSS Sensor High/Open..
63. P1356 Rear Cylinder No Combustion
64. P1353 Front Cylnder No Combustion
65. P0444 Purge Solenoid Open/Low
66. P0445 Purge Solenoid High
67. P1475 Exhaust Actuation Position Error
68. P1477 Exhaust Actuator Open/Low
69. P1478 Exhaust Actuator Shorted/High
70. P0131 Front Oxygen Sensor Low
71. P0151 Rear Oxygen Sensor Low
72. P0132 Front Oxygen Sensor High
73. P0152 Rear Oxygen Sensor High
74. P0134 Front Oxygen Sensor Inactive
75. P0154 Rear Oxygen Sensor Inactive
76. P1510 EFI Limited Performance Mode
77. P1511 EFI Power Management Mode
78. P1512 EFI Forced Idle Mode
79. P0577 Cruise Control Input High


on Dec 20, 2016 | Cars & Trucks

1 Answer

P0421 code

"FWIW, according to the Mazda factory service manual, the P0421 code indicates "Warm up catalyst system efficiency below threshold".

The DETECTION CONDITION for this code indicates "Number of heated oxygen sensor (rear) inversion becomes closer to that of heated oxygen sensor (front)".


Warm up three way catalytic converter deterioration
Leakage exhaust system
Heated oxygen sensor (front) malfunction
Heated oxygen sensor (rear) malfunction
Mass air flow sensor malfunction
Throttle position sensor malfunction
Vehicle speed sensor malfunction"
I copied the above from a discussion group on the PO421 code. The code can be caused by any of the above listed problems. The vehicle should be further inspected and diagnosed, so you do not have components replaced that do not need to be replaced.

Apr 16, 2014 | 1998 Mazda 626

2 Answers

2003 Ford Windstar Service engine light on. Fault code is PO147. Where do I start to DIY?

Common Problems That Trigger the P0147 Code

  • Defective Rear Most Oxygen Sensor
  • Faulty Rear Most Oxygen Sensor wiring or connections
  • Exhaust leak in front of rear oxygen sensor

Jun 07, 2011 | 2003 Ford Windstar

1 Answer

My MIL light came on for my VW 2004 Passat and I had the code read at Autozone. The code was "system 2 lean; bank one" what does that mean?

It indicated the oxygen sensor at the bank one is reading wrongly or detecting the fault. It must be because the oxygen sensor itself has failed.

Jan 10, 2011 | 2004 Volkswagen Passat

1 Answer

I have 2 codes showing on my 2004 chrysler sebring.? P2096 AND p0137. what do they mean and how do I know what parts to get to fix the problem.

P0137 O2 Sensor Bank 1, Sensor 2 Voltage Low
P2096 Down Stream Fuel System Bank 1, Sensor 2 Lean

There are 3 possible engines in your vehicle, a 2.4L 4-cyl, a 2.7L V-6, and a 3.0L V-6. If your car has a 4-cyl then there is only one downstream O2 sensor. This is where you need to start the diagnosis for code P0137.
While it would be nice to assume that the sensor is faulty, the sensor wiring between sensor and PCM could be the problem as well.
That said, you are looking for a DOWNSTREAM OXYGEN SENSOR. I strongly advise that the replacement be OEM compatable. Avoid Universal Replacement types that use **** connectors to make them work.
Good Luck!

Dec 29, 2010 | 2004 Chrysler Sebring

1 Answer

Check engine light on code reads p2096 what

Fuel trim too lean. Usually means vacuum leak. Look for crushed,broken or melted off vacuum hoses near intake manifold. Or an obvious hissing noise at a normal idle. If so replace or repair clear codes your done. If not obvious take carb cleaner spray with nozzle attached car running & go over all vacuum hoses,intake manifold,egr valve see if idle raises if so you found leak. Repair. Could also be bad oxygen sensor switching bad o2 sensor but rarely.

Jun 06, 2010 | Hyundai Motor 2004 Accent

1 Answer

I need a diagram of the exhaust system on a Mazda 626

0996b43f80203328.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Component Location Chart-2000 MPV

1 PCM 2 Mass air flow (MAF)/intake air temperature (IAT) sensor 3 Throttle position (TP) sensor 4 Fuel tank pressure sensor 5 Engine coolant temperature (ECT) sensor 6 Crankshaft position (CKP) sensor 7 Camshaft position (CMP) sensor 8 Knock sensor 9 Heated oxygen sensor (HO2S) (front, LH) 10 Heated oxygen sensor (HO2S) (front, RH) 11 Heated oxygen sensor (HO2S) (rear, LH) 12 Heated oxygen sensor (HO2S) (rear, RH) 13 EGR boost sensor 14 Power steering pressure (PSP) switch 15 Main relay

0996b43f8020330c.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Component Location Chart-2001 MPV

1 PCM 2 Mass air flow (MAF)/Intake air temperature (IAT) sensor 3 Throttle position (TP) sensor 4 Engine coolant temperature (ECT) sensor 5 Crankshaft position (CKP) sensor 6 Camshaft position (CMP) sensor 7 Knock sensor 8 Heated oxygen sensor (HO2S) (front, LH) 9 Heated oxygen sensor (HO2S) (front, RH) 10 Heated oxygen sensor (HO2S) (rear, LH)* 11 Heated oxygen sensor (HO2S) (rear, RH)* 12 EGR boost sensor

0996b43f8020330f.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Component Location Chart- 2002-06 MPV

May 22, 2010 | 2004 Mazda MPV

1 Answer

04 hyndi accent GL with code returned

Signal Delay Time for Oxygen Sensor Ageing Limit
Diagnosis conditions
• Oxygen sensing after TWC is active
• No secondary air
• No diagnosis of secondary air system
• EVAP canister not highly loaded
• No faults in memory
Possible fault cause
♦ Oxygen sensor

Feb 10, 2009 | Hyundai Motor 2004 Accent

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