Subaru OBD Codes: Meaning & Fixes
Subaru: 27 error codes with meaning, severity, likely causes and repair cost estimates.
16Codes
2.4Average severity
0%High or critical
25%DIY-friendly
Severity distribution
Generic codes with Subaru data
Field data · Subaru
Source: NHTSA Complaints API (US government open data), analyzed by DTC mention.
Most viewed
P0420
Powertrain
The bank 1 catalytic converter no longer stores enough oxygen to clean the exhaust properly.
Low
P0171
Powertrain
The engine computer is adding the maximum extra fuel it's allowed on bank 1 and still sees…
Moderate
P0700
Powertrain
The transmission computer found a fault and asked for the check engine light – read the TCM…
Moderate
P2138
Powertrain
The two sensors in the gas pedal report different pedal positions, so the PCM limits throttle…
Moderate
P0011
Powertrain
The bank 1 intake cam sits further advanced than the PCM asked for, usually an oil or control…
Moderate
P0021
Powertrain
The bank 2 intake cam is more advanced than commanded or slow to respond; compare it with bank…
Moderate
All codes (7)
B1650
Toyota · Body
The airbag computer got an error from the passenger seat weight sensors and can't classify…
Moderate
P0011
Powertrain
The bank 1 intake cam sits further advanced than the PCM asked for, usually an oil or control…
Moderate
P0021
Powertrain
The bank 2 intake cam is more advanced than commanded or slow to respond; compare it with bank…
Moderate
P0171
Powertrain
The engine computer is adding the maximum extra fuel it's allowed on bank 1 and still sees…
Moderate
P0700
Powertrain
The transmission computer found a fault and asked for the check engine light – read the TCM…
Moderate
P2138
Powertrain
The two sensors in the gas pedal report different pedal positions, so the PCM limits throttle…
Moderate
P2440
Powertrain
The valve that should seal the air pump off from the bank 1 exhaust stays open, letting hot…
Moderate