P1210 Diagnostic Trouble Code

P1210 is a kind of OBD-II Diagnostic P-Powertrain Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a P1210 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
Faulty IMRC actuator/sensor

Repair Processes :

If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed.

Process Tips

Diagnostic trouble code P1210 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P1210.

Fortunately, P1210 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1210 Trouble Code For Specific Cars

P1210 Infiniti G37 SCP (J1850) Invalid or Missing Data for Exterior Environment
P1210 Triumph 1500 Passenger's Front Seat Down Switch Circuit Short to Battery
P1210 Mercedes E 280 ABS Power Relay Output Short Circuit To Battery
P1210 Zender Progetto SCP (J1850) Lack of Acknowledgment for External Access (Doors)
P1210 Borgward 1800 Control Module Programming Error
P1210 Subaru Xv MAF Sensor In Range But Higher Than Expected
P1210 Chevrolet Astro Driver Door Ajar Circuit Short To Ground