Mazda CX-9 Grand Touring 2009 Manual page 1243

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
POSSIBLE CAUSE
2008 Mazda CX-9 Grand Touring
P2126
Open circuit wiring harness between APP sensor terminal H and PCM
terminal 1AG
Short to ground circuit between APP sensor terminal H and PCM terminal
1 AG
Short to power supply in wiring harness between APP sensor terminal H
and PCM terminal 1 AG
P2131
Open circuit wiring harness between APP sensor terminal B and PCM
terminal 1 AC
Short to ground circuit between APP sensor terminal B and PCM terminal 1
AC
Short to power supply in wiring harness between APP sensor terminal B
and PCM terminal 1 AC