CEL Code 25, and blinking OD light
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CEL Code 25, and blinking OD light
My engine light has been coming on, so I checked the code today and it gave me a 25 - Air-fuel ratio lean malfunction. Any ideas what would cause this? I'm guessing maybe a dirty fuel filter or clogged injectors?
Also, when i'm in the "diagnostic" mode. The OD light keeps blinking and doesn't stop, does that mean anything?
Also, when i'm in the "diagnostic" mode. The OD light keeps blinking and doesn't stop, does that mean anything?
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I assume a bad o2 sensor could very well trigger a 25-Air-fuel ratio lean malfunction. But if a o2 sensor was bad would it not trigger a 21 or 28 as well?
#4
25 and 26 are for the O2 sensors
lOBD1 Codes
1 Normal Condition.
2 Air Flow Meter signal.
3 Ignition signal.
4 Engine Coolant Temperature Sensor signal.
5 Oxygen Sensor.
6 RPM signal (Crank Angle Pulse).
7 Throttle Position Sensor signal.
8 Intake Air Temperature Sensor signal.
9 Vehicle Speed Sensor signal.
10 Starter signal.
11 Switch signal.
11 ECU/ECM.
12 Knock Control Sensor signal.
12 RPM signal.
13 Knock Control CPU (ECM).
13 RPM signal.
14 Turbocharger Pressure.
14 Ignition signal.
21 Oxygen Sensor.
22 Engine Coolant Temperature Sensor signal.
23 Intake Air Temperature Sensor signal.
24 Intake Air Temperature Sensor signal.
25 Air-Fuel Ratio Lean.
26 Air-Fuel Ratio Rich.
27 Sub Oxygen Sensor signal.
28 No. 2 Oxygen Sensor signal.
31 Air Flow Meter signal (Vacuum Sensor signal).
32 Air Flow Meter signal.
34 Turbocharger Pressure signal.
35 Turbocharger Pressure Sensor signal.
35 HAC Sensor signal.
41 Throttle Position Sensor signal.
42 Vehicle Speed Sensor signal.
43 Starter signal.
51 Switch signal.
52 Knock Sensor signal.
53 Knock Sensor signal.
54 Inter-cooler ECM signal.
71 EGR System.
72 Fuel Cut Solenoid signal.
78 Fuel Pump Control signal.
81 TCM Communication.
83 TCM Communication.
84 TCM Communication.
85 TCM Communicatio
however looking at this list, u may be right - it could be the secondary O2 sensors for 21 and 28?? the ones after the cats
not sure - I have an EGR Code 71 after i seafoamed the car
lOBD1 Codes
1 Normal Condition.
2 Air Flow Meter signal.
3 Ignition signal.
4 Engine Coolant Temperature Sensor signal.
5 Oxygen Sensor.
6 RPM signal (Crank Angle Pulse).
7 Throttle Position Sensor signal.
8 Intake Air Temperature Sensor signal.
9 Vehicle Speed Sensor signal.
10 Starter signal.
11 Switch signal.
11 ECU/ECM.
12 Knock Control Sensor signal.
12 RPM signal.
13 Knock Control CPU (ECM).
13 RPM signal.
14 Turbocharger Pressure.
14 Ignition signal.
21 Oxygen Sensor.
22 Engine Coolant Temperature Sensor signal.
23 Intake Air Temperature Sensor signal.
24 Intake Air Temperature Sensor signal.
25 Air-Fuel Ratio Lean.
26 Air-Fuel Ratio Rich.
27 Sub Oxygen Sensor signal.
28 No. 2 Oxygen Sensor signal.
31 Air Flow Meter signal (Vacuum Sensor signal).
32 Air Flow Meter signal.
34 Turbocharger Pressure signal.
35 Turbocharger Pressure Sensor signal.
35 HAC Sensor signal.
41 Throttle Position Sensor signal.
42 Vehicle Speed Sensor signal.
43 Starter signal.
51 Switch signal.
52 Knock Sensor signal.
53 Knock Sensor signal.
54 Inter-cooler ECM signal.
71 EGR System.
72 Fuel Cut Solenoid signal.
78 Fuel Pump Control signal.
81 TCM Communication.
83 TCM Communication.
84 TCM Communication.
85 TCM Communicatio
however looking at this list, u may be right - it could be the secondary O2 sensors for 21 and 28?? the ones after the cats
not sure - I have an EGR Code 71 after i seafoamed the car
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#8
my sc300 was throwing the same code and i just replace the two front sensors. I couldn't afford OEM o2 sensors for my 95 sc300 so i was able to get it on ebay, it actually came with the flange so it was a direct fit for i think like 12 bucks a piece. The bad part is you have to cut the old sensor to keep the connector and splice it with the new sensor.
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My engine light has been coming on, so I checked the code today and it gave me a 25 - Air-fuel ratio lean malfunction. Any ideas what would cause this? I'm guessing maybe a dirty fuel filter or clogged injectors?
Also, when i'm in the "diagnostic" mode. The OD light keeps blinking and doesn't stop, does that mean anything?
Also, when i'm in the "diagnostic" mode. The OD light keeps blinking and doesn't stop, does that mean anything?
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