O2 Sensor Help
#1
O2 Sensor Help
Today, I ran a scan on my car and found the following codes:
P2631: O2 sensor pumping current trim circuit high bank 2 sensor 1
P0174: O2 sensor system too lean
P0171: System too lean bank 1
need your help on how to solve this one
Also got this one too P0720 output speed sensor circuit
P2631: O2 sensor pumping current trim circuit high bank 2 sensor 1
P0174: O2 sensor system too lean
P0171: System too lean bank 1
need your help on how to solve this one
Also got this one too P0720 output speed sensor circuit
#2
Race Director
P0171 and P0174 are lean fuel codes for bank1 and bank2, respectively. P2631 is the top A/F sensor on the front bank. The SM says to troubleshoot the P2631 first before the P0171/0174 codes (because it could be causing the P0171/0174 codes). It could be a short, bad connection, or a bad sensor.
You might get lucky and fix it by merely replaced the bank 2 A/F sensor or you could be on a wild goose chase. Might be better to leave it to the professionals.
The P0720 is likely a short or faulty output shaft speed sensor. Again, unless you know what you are doing, I'd let the professionals handle it.
You might get lucky and fix it by merely replaced the bank 2 A/F sensor or you could be on a wild goose chase. Might be better to leave it to the professionals.
The P0720 is likely a short or faulty output shaft speed sensor. Again, unless you know what you are doing, I'd let the professionals handle it.
Last edited by nfnsquared; 12-05-2012 at 11:50 AM.
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noob23genTL (12-05-2012)
#3
P0171 and P0174 are lean fuel codes for bank1 and bank2, respectively. P2631 is the top A/F sensor on the front bank. The SM says to troubleshoot the P2631 first before the P0171/0174 codes (because it could be causing the P0171/0174 codes). It could be a short, bad connection, or a bad sensor.
You might get lucky and fix it by merely replaced the bank 2 A/F sensor or you could be on a wild goose chase. Might be better to leave it to the professionals.
The P0720 is likely a short or faulty output shaft speed sensor. Again, unless you know what you are doing, I'd let the professionals handle it.
You might get lucky and fix it by merely replaced the bank 2 A/F sensor or you could be on a wild goose chase. Might be better to leave it to the professionals.
The P0720 is likely a short or faulty output shaft speed sensor. Again, unless you know what you are doing, I'd let the professionals handle it.
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