P2097 is a generic OBD II code, which means that it has the same meaning for the Pontiac Grand Am as it would any other vehicle. It specifically indicates that your Grand Am detected that air-fuel mixture reading as the exhaust gas exits the catalytic converter is too rich. (too much fuel for the amount … Read more
P2098 is a generic OBD II code. It specifically indicates that your Grand Am detected a lean condition after the catalytic converter (too much air for the amount of fuel present). P2098 Definition This particular code is generic, so it has the same meaning for your Pontiac Grand Am as any other vehicle. There are … Read more
U0073 Definition: Control Module Communication Bus”A” Off U0073 is a fairly common trouble code. It is generic, so it has the same meaning for your Pontiac Grand Am as it would any other. This code appears when something has interrupted the communication between two of your Grand Am’s control modules. The most common causes of … Read more
P2276 is a general diagnostic trouble code. It means that your Pontiac Grand Am’s third (from the exhaust manifold) “bank 2” downstream oxygen sensor (behind the catalytic converter) is continuously sending voltage that indicates a lean air/fuel mixture. Having this code does not necessarily mean that the vehicle is running lean (although it can, … Read more
P2274 in the Pontiac Grand Am is a general diagnostic trouble code. It means that the “bank 1” oxygen sensor (third oxygen sensor from the exhaust manifold, behind a catalytic converter) is continuously sending voltage that indicates a lean air/fuel mixture. This does not necessarily mean that the vehicle is running lean (although it … Read more
P2018 is a generic diagnostic trouble code (DTC) that indicates an issue with your Pontiac Grand Am’s intake manifold runner position sensor/valve (from here on out, we will be referring to this sensor by its common abbreviation of IMRC). P2018 Definition: IMRC – Switch Circuit Intermittent (Bank 1) IMRC The IMRC’s job is to help your … Read more
P0356 is a generic OBD II diagnostic code that indicates an issue with the ignition coil “F” (the sixth cylinder). Specifically with the primary or secondary wiring circuits. If your Pontiac Grand Am has thrown this code, it will usually be accompanied by P0306. Addressing P0356 should take care of P0306 on its own. P0356 is … Read more
P0355 is a generic OBD II diagnostic code that indicates an issue with the ignition coil “E”. Specifically with the primary or secondary wiring circuits. If your Pontiac Grand Am has thrown this code, it may be accompanied by P0305. P0355 is a relatively straightforward diagnosis and is typically caused by a bad coil pack or wiring harness issue, … Read more
P2198 is a generic diagnostic trouble code that indicates that your Pontiac Grand Am’s B2S1 O2 sensor signal is stuck rich. It does not necessarily mean that the vehicle itself is running rich (although it very well could). DTC P2198 is most likely caused by a bad oxygen sensor, although there are many potential secondary … Read more
P2138 is a generic powertrain code that can affect your Pontiac Grand Am’s “drive by wire” throttle system. It means that your Grand Am’s “D” and “E” throttle position sensors do not agree with one another on how much far the throttle has been opened. They should have a similar voltage output. In this case, … Read more